Support Encoding and Decoding MPEG-TS

[EricHenry]

As part of bluenviron/mediamtx#5476 add the ability to encode and decode MPEG-TS packets.

[codecov]

Codecov Report

❌ Patch coverage is 70.37037% with 24 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.09%. Comparing base (e0a98c8) to head (7f2928d).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/format/rtpmpegts/encoder.go	62.26%	16 Missing and 4 partials ⚠️
pkg/format/mpegts.go	66.66%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1007      +/-   ##
==========================================
- Coverage   83.17%   83.09%   -0.09%     
==========================================
  Files         124      126       +2     
  Lines       11676    11757      +81     
==========================================
+ Hits         9712     9769      +57     
- Misses       1449     1467      +18     
- Partials      515      521       +6     

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[aler9]

i did the following changed:

• decoder and encoder were refactored to work with detached TS packets ([][]byte) instead of concatenated TS packets ([]byte), and in order to remove the limitation that MaxPayloadSize was forced to be a multiple of mpegtsPacketSize
• fuzzing
• linting

then i merged. Thanks.