flv crate refactor

[TroyKomodo]

Refactors the FLV Crate adding support for the new enhanced spec and improving the usage and API docs.

CLOUD-27

[codecov]

Codecov Report

Attention: Patch coverage is 73.33333% with 64 lines in your changes missing coverage. Please review.

Project coverage is 50.96%. Comparing base (4459e5e) to head (a59f045).

❗ Current head a59f045 differs from pull request most recent head f387659

Please upload reports for the commit f387659 to get more accurate results.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
crates/av1/src/config.rs	15.00%	17 Missing ⚠️
crates/flv/src/video.rs	69.64%	17 Missing ⚠️
crates/flv/src/macros.rs	27.27%	8 Missing ⚠️
crates/flv/src/avc.rs	66.66%	5 Missing ⚠️
crates/flv/src/audio.rs	84.61%	4 Missing ⚠️
crates/flv/src/tag.rs	82.60%	4 Missing ⚠️
crates/flv/src/header.rs	92.00%	2 Missing ⚠️
crates/transmuxer/src/codecs/aac.rs	0.00%	2 Missing ⚠️
crates/transmuxer/src/errors.rs	0.00%	2 Missing ⚠️
crates/flv/src/aac.rs	87.50%	1 Missing ⚠️
... and 2 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #250      +/-   ##
==========================================
- Coverage   51.00%   50.96%   -0.05%     
==========================================
  Files         195      201       +6     
  Lines       15819    15816       -3     
==========================================
- Hits         8069     8061       -8     
- Misses       7750     7755       +5     

Files with missing lines	Coverage Δ
crates/flv/src/file.rs	100.00% <100.00%> (ø)
crates/transmuxer/src/codecs/av1.rs	97.61% <ø> (ø)
crates/transmuxer/src/codecs/avc.rs	84.09% <ø> (ø)
crates/transmuxer/src/codecs/hevc.rs	97.87% <ø> (ø)
crates/transmuxer/src/define.rs	100.00% <ø> (ø)
crates/flv/src/aac.rs	87.50% <87.50%> (ø)
crates/flv/src/script.rs	92.85% <92.85%> (ø)
crates/transmuxer/src/lib.rs	94.02% <96.15%> (-0.17%)	⬇️
crates/flv/src/header.rs	92.00% <92.00%> (ø)
crates/transmuxer/src/codecs/aac.rs	93.22% <0.00%> (-3.28%)	⬇️
... and 7 more

... and 1 file with indirect coverage changes

Components	Coverage Δ
scuffle-batching	100.00% <ø> (ø)
scuffle-bootstrap	53.96% <ø> (+1.34%)	⬆️
scuffle-context	100.00% <ø> (ø)
scuffle-ffmpeg	0.00% <ø> (ø)
scuffle-h3-webtransport	0.00% <ø> (ø)
scuffle-http	0.00% <ø> (ø)
scuffle-metrics	42.69% <ø> (ø)
scuffle-pprof	0.00% <ø> (ø)
scuffle-settings	0.00% <ø> (ø)
scuffle-signal	100.00% <ø> (ø)
postcompile	0.00% <ø> (ø)
scuffle-image-processor	∅ <ø> (∅)