feat: Attributes forwarding to message enums and fields

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 76.38889% with 34 lines in your changes missing coverage. Please review.

Project coverage is 85.83%. Comparing base (90af7d0) to head (d1c24ea).

Files	Patch %	Lines
sylvia-derive/src/parser/attributes/messages.rs	27.27%	8 Missing :warning:
sylvia-derive/src/parser/attributes/attr.rs	80.64%	6 Missing :warning:
sylvia-derive/src/parser/attributes/custom.rs	45.45%	6 Missing :warning:
sylvia-derive/src/parser/attributes/mod.rs	68.42%	6 Missing :warning:
sylvia-derive/src/parser/attributes/msg.rs	80.00%	6 Missing :warning:
sylvia-derive/src/parser/attributes/error.rs	75.00%	1 Missing :warning:
...rive/src/parser/attributes/override_entry_point.rs	75.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #388 +/- ## ========================================== - Coverage 86.15% 85.83% -0.33% ========================================== Files 39 40 +1 Lines 2789 2866 +77 ========================================== + Hits 2403 2460 +57 - Misses 386 406 +20 ```

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[kulikthebird]

Please document this attribute in doc comments of contract macro. You can do it on separate PR.

LGTM

I've just created a new issue: https://github.com/CosmWasm/sylvia/issues/390