chore: Setup new directory structure

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 80.21638% with 256 lines in your changes missing coverage. Please review.

Project coverage is 82.37%. Comparing base (059bf84) to head (b5baddd).

Files	Patch %	Lines
sylvia-derive/src/entry_points.rs	0.00%	102 Missing :warning:
sylvia-derive/src/parser/interface.rs	0.00%	102 Missing :warning:
sylvia-derive/src/interface.rs	78.43%	22 Missing :warning:
sylvia-derive/src/interface/mt.rs	92.56%	11 Missing :warning:
...ia-derive/src/contract/communication/struct_msg.rs	89.01%	10 Missing :warning:
sylvia-derive/src/types/msg_field.rs	93.61%	3 Missing :warning:
sylvia-derive/src/types/msg_variant.rs	97.82%	3 Missing :warning:
...a-derive/src/contract/communication/wrapper_msg.rs	98.41%	2 Missing :warning:
sylvia-derive/src/contract.rs	98.64%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #411 +/- ## ========================================== - Coverage 85.05% 82.37% -2.69% ========================================== Files 42 53 +11 Lines 2924 3126 +202 ========================================== + Hits 2487 2575 +88 - Misses 437 551 +114 ```

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