[Large Audio frame support] Add aconfig feature flags

Test: Manual:
 - Test flag can be called in codec service
 - Test flag can be flipped by tooling
  - adb shell setprop persist.device_config\
              .aconfig_flags.codec_fwk\
	      .com.android.media.codec.flags\
	      .large_audio_frame true

Bug: 298052174

Change-Id: I1c4fd403f6b9622a598be41091aa08a37e1eee63