Fix PV compat crash with other improvements

[apehum]

Fixes crash by swapping @Inject with @InjectPlasmoVoice:

[16:07:48] [Render thread/ERROR]: Unreported exception thrown!
java.lang.NullPointerException: Cannot invoke "su.plo.voice.api.client.PlasmoVoiceClient.getServerConnection()" because "this.voiceClient" is null
	at knot//com.tom.cpmpvc.CPMAddon.isMuted(CPMAddon.java:55)
	at knot//com.tom.cpmpvc.CPMPVC.isMuted(CPMPVC.java:43)
	...

Other changes not related to crash:

• AudioCaptureProcessedEvent now passes audio only when actually speaking (aka using activations).
• isMuted now respects client-side mutes.
  - AudioUtil (available in public API) is now used to calculate audio level and convert dB value to [0, 1] float range. Although audioLevelToDoubleRange actually maps from [-60, 0] -> [0, 1], so logic is not the same. But I found it more "accurate", because original [-127, 0] -> [0, 1] range means that -60 is 0.5, which is effectively silence.

[tom5454]

Models were made with the expectation of the old range, so changing the logic will break old models' animations.