Add LE Audio feature switcher in the developer option menu am: 948b7cb9

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/18740331



Change-Id: Ia0fa92a5061bdb75a648dbb3d8db9fd2bcbdb1a4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>