Refactored Protocol300Transmission parsing to provide more detailed error information when encountering invalid byte sequences. Changed the error variant from `InvalidByte` to `InvalidBytes` which now includes the problematic byte slice, enabling better debugging. Updated the match arm to capture the byte slice as `b` instead of using a wildcard, and modified the error logging to reflect these changes. The lifetime parameter was added to the `FromBytesError` enum to support the byte slice reference.
Add a new method to calculate the byte length of Protocol300Transmission
variants without converting to bytes. The method returns:
- 1 byte for control characters (Ack, Enq, Eot, Nack)
- 3 bytes for Init
- telegram_length + 3 bytes for Message
Include comprehensive unit tests for all transmission variants to ensure
correct length calculation.
