### 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
return (
            child.add_method(
                method,
                authorization_type=authorizer.get("type"),
                api_key_required=None,
                authorizer_id=authorizer.get("id"),
            )
            if (authorizer := create_authorizer(method_schema))
            else child.add_method(method, None, None)
        )
    if definitions := resolved_schema.get("definitions", {}):
        for name, model in definitions.items():
            rest_api.add_model(name=name, schema=model, content_type=APPLICATION_JSON)
    
    basepath_mode = (query_params.get("basepath") or ["prepend"])[0]
    base_path = ""
    if basepath_mode == "prepend":
        base_path = resolved_schema.get("basePath") or ""
    if basepath_mode == "split":