### 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.
airflow/providers/amazon/aws/operators/emr.py
#
#
#
import ast
import sys
from datetime import datetime
from typing import Any, Dict, List, Optional, Union
from uuid import uuid4
from airflow.exceptions import AirflowException
from airflow.models import BaseOperator, BaseOperatorLink, TaskInstance
from airflow.providers.amazon.aws.hooks.emr import EmrHook
if sys.version_info >= (3, 8):
    from functools import cached_property
else:
    from cached_property import cached_property
from airflow.providers.amazon.aws.hooks.emr_containers import EMRContainerHook
class EmrAddStepsOperator(BaseOperator):