### Is there an existing issue for this?

- [X] I have searched the existing issues

### Feature description

Basically we want to only run the lambda when an insert is occurring in DynamoDB.
I tested using Dynobase deleting a record and the lambda still triggered.

```
resource "aws_lambda_event_source_mapping" "event-log" {
	event_source_arn  = aws_dynamodb_table.event-log.stream_arn
	function_name     = module.main.lambda-arn
	starting_position = "LATEST"
	enabled = true # change to false when truncating the table in localstack
	maximum_retry_attempts = 1 # limit retry on failure to 1 for now

	# https://dev.to/aws-builders/filtering-dynamodb-streams-before-lambda-p5p
	filter_criteria { # Doesn't seem to work on LocalStack for now
		filter {
			pattern = jsonencode({
				body = {
					eventName : ["INSERT"]
				}
			})
		}
	}
}
```


### 🧑‍💻 Implementation

_No response_

### Anything else?

 https://dev.to/aws-builders/filtering-dynamodb-streams-before-lambda-p5p
child_id = create_resource_id()
        rel_path = rel_path or "/"
        resource = Resource(
            resource_id=child_id,
            region_name=rest_api.region_name,
            api_id=rest_api.id,
            path_part=parts[-1] or "/",
            parent_id=parent_id,
        )
        paths_dict = resolved_schema["paths"]
        method_paths = paths_dict.get(rel_path, {})
        for method, method_schema in method_paths.items():
            method = method.upper()
            method_integration = method_schema.get("x-amazon-apigateway-integration", {})
            method_resource = create_method_resource(resource, method, method_schema)
            method_resource["requestParameters"] = method_integration.get("requestParameters")
            responses = method_schema.get("responses", {})
            for status_code in responses:
                response_model = None
                if model_schema := responses.get(status_code, {}).get("schema", {}):
                    response_model = {APPLICATION_JSON: model_schema}
                response_parameters = (
                    method_integration.get("responses", {})