Lazy-load audio engine

Is your feature request related to a problem? Please describe.
The audio providers/components/etc. are always initialized in a game, even if all scenes don't have any audio component/listener.

Describe the solution you'd like
Have the audio system initialize on-demand (when it is first needed).

Describe alternatives you've considered
This behavior could be driven by a configuration option, where audio is

• opt-out: in which case any attempt to initialize it would throw
• lazy-load: initialized on first use
• pre-load (current behavior): initialized at the start

Additional context
While rare, some games might not need any audio. Not initializing that part of the engine might save some memory and improve performance.

Another use case is when trying to run a game from WSL where audio is not supported by default. Granted, it is niche but very useful for developers to quickly test whether a game works correctly on Linux without requiring dual-boot or another machine.

No source files or tests are named. Start by locating where the audio providers, components, and listeners are initialized at game startup, then trace how audio is first used. Done means games without audio avoid initializing the audio system, while games that use audio initialize it on demand.