refactor packet, incoming and codec

[iGxnon]

Signed-off-by: iGxnon igxnon@gmail.com

[codecov[bot]]

Codecov Report

Attention: 115 lines in your changes are missing coverage. Please review.

Comparison is base (9513433) 45.98% compared to head (1b17138) 45.14%.

Files	Patch %	Lines
src/codec/decoder/ack.rs	0.00%	24 Missing :warning:
src/packet/connected/frame_set.rs	4.16%	23 Missing :warning:
src/server/handshake.rs	0.00%	23 Missing :warning:
src/packet/connected/mod.rs	0.00%	17 Missing :warning:
src/packet/mod.rs	0.00%	9 Missing :warning:
src/codec/mod.rs	0.00%	8 Missing :warning:
src/codec/decoder/frame.rs	0.00%	3 Missing :warning:
src/codec/decoder/ordered.rs	94.54%	3 Missing :warning:
src/server/offline.rs	0.00%	3 Missing :warning:
src/codec/decoder/fragment.rs	96.87%	1 Missing :warning:
... and 1 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #3 +/- ## ========================================== - Coverage 45.98% 45.14% -0.85% ========================================== Files 19 19 Lines 1920 1876 -44 ========================================== - Hits 883 847 -36 + Misses 1037 1029 -8 ```

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[iGxnon]

sad coverage