### Body

Spun out of https://github.com/apache/airflow/pull/19665#discussion_r760469246

**Info:**
Currently operators in Amazon provider has a structure of operator per file ([link](https://github.com/apache/airflow/tree/35be8bdee0cdd3e5c73270b0b65e0552fb9d9946/airflow/providers/amazon/aws/operators)) A single service S3 has 7 operators files! This makes it very hard to discover classes.
The proposed structure is what we have for GCP ([link](https://github.com/apache/airflow/tree/35be8bdee0cdd3e5c73270b0b65e0552fb9d9946/airflow/providers/google/cloud/operators)) where file is created for a service and all operators for that services are in a single file.


**Proposed changes:**


**Operators:**

files that don't require changes:

athena.py
batch.py
cloud_formation.py
datasync.py
ecs.py
eks.py
glacier.py
glue.py
glue_crawler.py
redshift.py
sns.py
sqs.py

files that require changes:

|                Current                	|        New       	|
|:-------------------------------------:	|:----------------:	|
|           dms_create_task.py          	|      dms.py      	|
|           dms_delete_task.py          	|      dms.py      	|
|         dms_describe_tasks.py         	|      dms.py      	|
|           dms_start_task.py           	|      dms.py      	|
|            dms_stop_task.py           	|      dms.py      	|
|         ec2_start_instance.py         	|      ec2.py      	|
|          ec2_stop_instance.py         	|      ec2.py      	|
|            emr_add_steps.py           	|      emr.py      	|
|           emr_containers.py           	|      emr.py      	|
|         emr_create_job_flow.py        	|      emr.py      	|
|         emr_modify_cluster.py         	|      emr.py      	|
|       emr_terminate_job_flow.py       	|      emr.py      	|
|              s3_bucket.py             	|       s3.py      	|
|          s3_bucket_tagging.py         	|       s3.py      	|
|           s3_copy_object.py           	|       s3.py      	|
|          s3_delete_objects.py         	|       s3.py      	|
|          s3_file_transform.py         	|       s3.py      	|
|               s3_list.py              	|       s3.py      	|
|          s3_list_prefixes.py          	|       s3.py      	|
|           sagemaker_base.py           	|   sagemaker.py   	|
|         sagemaker_endpoint.py         	|   sagemaker.py   	|
|      sagemaker_endpoint_config.py     	|   sagemaker.py   	|
|           sagemaker_model.py          	|   sagemaker.py   	|
|        sagemaker_processing.py        	|   sagemaker.py   	|
|         sagemaker_training.py         	|   sagemaker.py   	|
|         sagemaker_transform.py        	|   sagemaker.py   	|
|          sagemaker_tuning.py          	|   sagemaker.py   	|
| step_function_get_execution_output.py 	| step_function.py 	|
|    step_function_start_execution.py   	| step_function.py 	|


**Sensors:**

files that don't require changes:

athena.py
batch.py
cloud_formation.py
eks.py
glacier.py
glue.py
glue_crawler.py
redshift.py
sqs.py

files that require changes:

|           Current          	|        New       	|          Note          	|
|:--------------------------:	|:----------------:	|:----------------------:	|
|         dms_task.py        	|      dms.py      	|                        	|
|    ec2_instance_state.py   	|      ec2.py      	|                        	|
|         emr_base.py        	|      emr.py      	|                        	|
|      emr_containers.py     	|      emr.py      	|                        	|
|       emr_job_flow.py      	|      emr.py      	|                        	|
|         emr_step.py        	|      emr.py      	|                        	|
|  glue_catalog_partition.py 	|      glue.py     	| New file already exist 	|
|          s3_key.py         	|       s3.py      	|                        	|
|    s3_keys_unchanged.py    	|       s3.py      	|                        	|
|        s3_prefix.py        	|       s3.py      	|                        	|
|      sagemaker_base.py     	|   sagemaker.py   	|                        	|
|    sagemaker_endpoint.py   	|   sagemaker.py   	|                        	|
|    sagemaker_training.py   	|   sagemaker.py   	|                        	|
|   sagemaker_transform.py   	|   sagemaker.py   	|                        	|
|     sagemaker_tuning.py    	|   sagemaker.py   	|                        	|
| step_function_execution.py 	| step_function.py 	|                        	|


**Action items:**
Create new files and deprecate old ones. This is a backward compatible change.
old file should raise deprecation warnings.

- [x] operators/dms.py @bhavaniravi  https://github.com/apache/airflow/pull/20156
- [x] operators/ec2.py @eladkal  https://github.com/apache/airflow/pull/20157
- [x] operators/emr.py @bhavaniravi https://github.com/apache/airflow/pull/20160
- [x] operators/s3.py @KennyRich https://github.com/apache/airflow/pull/20167
- [x] operators/sagemaker.py @bhavaniravi https://github.com/apache/airflow/pull/20370
- [x] operators/step_function.py @bhavaniravi https://github.com/apache/airflow/pull/20158
- [x] sensors/dms.py @bhavaniravi https://github.com/apache/airflow/pull/20156
- [x] sensors/ec2.py @eladkal  https://github.com/apache/airflow/pull/20157
- [x] sensors/emr.py @bhavaniravi https://github.com/apache/airflow/pull/20160
- ~~[ ] sensors/glue.py  @eladkal On hold as we don't know if this really required. Will be revisited in the future if needed~~
- [x] sensors/s3.py @KennyRich https://github.com/apache/airflow/pull/20167
- [x] sensors/sagemaker.py @bhavaniravi https://github.com/apache/airflow/pull/20370
- [x] sensors/step_function.py @bhavaniravi https://github.com/apache/airflow/pull/20158


FYI @dstandish @ferruzzi @o-nikolas @dbarrundiag 

### Committer

- [X] I acknowledge that I am a maintainer/committer of the Apache Airflow project.
dev/provider_packages/prepare_provider_packages.py
"""
    Converts cross-package dependencies to a markdown table
    :param cross_package_dependencies: list of cross-package dependencies
    :param markdown: if True, markdown format is used else rst
    :return: formatted table
    """
    from tabulate import tabulate
    headers = ["Dependent package", "Extra"]
    table_data = []
    prefix = "apache-airflow-providers-"
    base_url = "https://airflow.apache.org/docs/"
    for dependency in cross_package_dependencies:
        pip_package_name = f"{prefix}{dependency.replace('.','-')}"
        url_suffix = f"{dependency.replace('.','-')}"
        if markdown:
            url = f"[{pip_package_name}]({base_url}{url_suffix})"
        else:
            url = f"`{pip_package_name} <{base_url}{prefix}{url_suffix}>`_"
        table_data.append((url, f"`{dependency}`" if markdown else f"``{dependency}``"))
    return tabulate(table_data, headers=headers, tablefmt="pipe" if markdown else "rst")
LICENCE = """<!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file
 distributed with this work for additional information
 regarding copyright ownership.  The ASF licenses this file
 to you under the Apache License, Version 2.0 (the
 "License"); you may not use this file except in compliance
 with the License.  You may obtain a copy of the License at
   http://www.apache.org/licenses/LICENSE-2.0
 Unless required by applicable law or agreed to in writing,