Add subsrcibe mode to hls component

[Karolk99]

Acknowledging the stipulations set forth:

• I hereby confirm that a Pull Request involving updates to the Software Development Kit (SDK) has been smoothly merged, currently awaits processing, or is otherwise deemed unnecessary in this context.
• I also affirm that another Pull Request, specifically addressing updates to the documentation body (commonly referred to as 'docs'), has either been successfully incorporated, is in the process of review, or is considered superfluous under the prevailing circumstances.

[codecov]

Codecov Report

Merging #118 (05e8ae1) into main (67620f4) will increase coverage by 0.20%.
Report is 1 commits behind head on main.
The diff coverage is 95.45%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #118      +/-   ##
==========================================
+ Coverage   86.09%   86.30%   +0.20%     
==========================================
  Files          52       54       +2     
  Lines         971      993      +22     
==========================================
+ Hits          836      857      +21     
- Misses        135      136       +1     

Files	Coverage Δ
lib/jellyfish/component/hls.ex	91.30% <100.00%> (+0.39%)	⬆️
lib/jellyfish/room.ex	85.53% <100.00%> (+0.86%)	⬆️
lib/jellyfish_web/api_spec/component/hls.ex	100.00% <ø> (ø)
lib/jellyfish_web/api_spec/subscription.ex	100.00% <100.00%> (ø)
lib/jellyfish_web/router.ex	100.00% <100.00%> (ø)
...llyfish_web/controllers/subscription_controller.ex	88.88% <88.88%> (ø)

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