feat: introduce room_id generator

[kamciokodzi]

This PR introduces:

• Room ID generator based on the node name where the room was created
• Determining which node owns given room
• Replaced rpc with erpc
• Introduce primitive feature flag module

Docs

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

Attention: Patch coverage is 70.00000% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 86.89%. Comparing base (0b3270f) to head (25da293).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #206      +/-   ##
==========================================
- Coverage   87.12%   86.89%   -0.24%     
==========================================
  Files          74       77       +3     
  Lines        1538     1549      +11     
==========================================
+ Hits         1340     1346       +6     
- Misses        198      203       +5     

Files	Coverage Δ
lib/fishjam/application.ex	48.64% <ø> (ø)
lib/fishjam/component/file.ex	100.00% <ø> (ø)
lib/fishjam/component/hls/recording.ex	89.47% <100.00%> (ø)
lib/fishjam/component/hls/request_handler.ex	91.89% <100.00%> (ø)
lib/fishjam/feature_flags.ex	100.00% <100.00%> (ø)
lib/fishjam/room/config.ex	100.00% <100.00%> (+3.57%)	⬆️
lib/fishjam/room/id.ex	91.66% <91.66%> (ø)
lib/fishjam/room_service.ex	85.50% <40.00%> (-1.51%)	⬇️
lib/fishjam/rpc_client.ex	44.44% <44.44%> (ø)

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