### Is there an existing issue for this?

- [X] I have searched the existing issues

### Feature description

AWS lambda has [support for reporting partial batch failure for a SQS batch](https://docs.aws.amazon.com/lambda/latest/dg/with-sqs.html#services-sqs-batchfailurereporting). We're currently using it for our lambda functions on our [serverless.yml](https://www.serverless.com/blog/improved-sqs-batch-error-handling-with-aws-lambda), and would like to test the configuration locally. It'd be great to have it supported on LocalStack.


### 🧑‍💻 Implementa

_No response_

### Anything else?

![Screenshot 2022-01-19 at 6 00 31 PM](https://user-images.githubusercontent.com/39733588/150461615-949ec0b5-564b-4c0c-8a51-0047a7f0faef.png)


```
            "FunctionResponseTypes": [
                "ReportBatchItemFailures"
            ]
```
is missing from localstack's event source mapping despite setting it
return fn(*args, strict_slashes=False, **kwargs)
EXEC_MUTEX = threading.RLock()
DO_USE_DOCKER = None
JSON_START_CHAR_MAP = {
    list: ("[",),
    tuple: ("[",),
    dict: ("{",),
    str: ('"',),
    bytes: ('"',),
    bool: ("t", "f"),
    type(None): ("n",),
    int: ("0", "1", "2", "3", "4", "5", "6", "7", "8", "9"),
    float: ("0", "1", "2", "3", "4", "5", "6", "7", "8", "9"),
}
POSSIBLE_JSON_TYPES = (str, bytes)
JSON_START_TYPES = tuple(set(JSON_START_CHAR_MAP.keys()) - set(POSSIBLE_JSON_TYPES))
JSON_START_CHARS = tuple(set(functools.reduce(lambda x, y: x + y, JSON_START_CHAR_MAP.values())))
LAMBDA_EXECUTOR = lambda_executors.AVAILABLE_EXECUTORS.get(
    get_executor_mode(), lambda_executors.DEFAULT_EXECUTOR
)
IAM_POLICY_VERSION = "2012-10-17"
CHECK_HANDLER_ON_CREATION = False
class LambdaRegion(RegionBackend):