Improved abort method

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Currently flask-smorest republishes the `abort`-method of Flask-Restful, which accepts additional keyword-args and an exception.
However, in `ErrorHandlerMixin.handle_http_exception` only `message`, `errors` and `headers` are supported as keyword-args. Everything else is ignored, which is quite confusing behaviour.

A flask-smorest specific `abort` like this would avoid confusion and allow proper type hints:
```python
def abort(http_status_code: int,
message: typing.Optional[str] = None,
errors: typing.Optional[typing.Mapping] = None,
headers: typing.Optional[typing.Mapping] = None):
"""
Raise an HTTPException for the given http_status_code.
:param http_status_code: the HTTP status code
:param message: an error message
:param errors: can be passed to define the location(s) of the error(s)
:param headers: additional headers to be passed to the response
"""
try:
flask.abort(http_status_code)
except HTTPException as err:
# re-raise exception with additional information
data = {}
if message is not None:
data["message"] = message
if errors is not None:
data["errors"] = errors
if headers is not None:
data["headers"] = headers
err.data = data
raise err
```

Start at ErrorHandlerMixin.handle_http_exception and review how flask-smorest currently republishes Flask-Restful's abort method. Done means providing a flask-smorest-specific abort entry point that accepts the documented status, message, errors, and headers arguments, preserves them on the raised HTTP exception, and supports proper type hints.

Written by the indexing model from the issue text.