Move from lobby service to utils for reuse across services. Method is
generic enough for utility status. Future: create dedicated LiveKit
service to encapsulate all LiveKit-related utilities.
Fix container networking issue where app-dev container couldn't resolve
localhost address when calling LiveKit API. Update configuration to use
proper container network addressing for backchannel communication between
services.
Create dedicated utility function for livekit API client initialization.
Centralizes configuration logic including custom session handling for SSL
verification. Improves code reuse across backend components that interact
with LiveKit.