Improved message error handling

[tetter27]

• Specify Protocol Violation for operations as specification violations
• When handling unidirectional streams, connections are terminated only by Protocol Violation errors
• Fixed to ignore unknown version specific parameter in announce messages
• Add tests to message_handler and handlers

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 79.16667% with 15 lines in your changes missing coverage. Please review.

Project coverage is 69.79%. Comparing base (cad3bbb) to head (9655e1a). Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
moqt-server/src/lib.rs	0.00%	10 Missing :warning:
moqt-server/src/modules/message_handler.rs	93.87%	3 Missing :warning:
moqt-core/src/modules/message_type.rs	50.00%	1 Missing :warning:
moqt-core/src/modules/messages/announce.rs	75.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #85 +/- ## =========================================== + Coverage 46.67% 69.79% +23.12% =========================================== Files 37 37 Lines 1414 1427 +13 =========================================== + Hits 660 996 +336 + Misses 754 431 -323 ```

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[tetter27]

Merged without review