add RecordVoiceMessage audio focus requester for recording

separates recording from playback focus - willPausedWhenDucked is false
for recording so notification sounds don't interrupt mid-recording

Signed-off-by: vmfunc <celeste@linux.com>

libraries/audio/api/src/main/kotlin/io/element/android/libraries/audio/api/AudioFocus.kt

@@ -11,6 +11,7 @@ package io.element.android.libraries.audio.api
 enum class AudioFocusRequester {
     ElementCall,
     VoiceMessage,
+    RecordVoiceMessage,
     MediaViewer,
 }