feat: Forward generics

[codecov[bot]]

Codecov Report

Attention: 79 lines in your changes are missing coverage. Please review.

Comparison is base (7fe53ea) 86.57% compared to head (4322f30) 86.66%.

Files	Patch %	Lines
sylvia-derive/src/parser.rs	61.97%	27 Missing :warning:
sylvia-derive/src/message.rs	92.15%	16 Missing :warning:
sylvia-derive/src/associated_types.rs	87.87%	12 Missing :warning:
sylvia-derive/src/check_generics.rs	30.00%	7 Missing :warning:
sylvia-derive/src/multitest.rs	94.01%	7 Missing :warning:
sylvia-derive/src/strip_self_path.rs	80.00%	5 Missing :warning:
sylvia-derive/src/interfaces.rs	86.95%	3 Missing :warning:
sylvia-derive/src/input.rs	98.11%	1 Missing :warning:
sylvia-derive/src/querier.rs	98.61%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #298 +/- ## ========================================== + Coverage 86.57% 86.66% +0.09% ========================================== Files 25 28 +3 Lines 1773 2055 +282 ========================================== + Hits 1535 1781 +246 - Misses 238 274 +36 ```

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