Add Wear OS SIP client module running baresip NDK stack

- New :wear application module (Wear Compose, minSdk 30)
- Second JNI lib 'wearbaresip' reusing distribution static libs
- Watch-side service initializes baresip via full init path
  (libre_init -> conf_configure -> baresip_init -> ua_init)
- FGS started from MainActivity foreground state with mic type
  only (phoneCall requires default-dialer, rejected on watch)
- Runtime-verified: builds, installs, native lib loads and SIP
  stack starts on armeabi-v7a Wear OS device

.gitignore

@@ -18,6 +18,8 @@ build
 .externalNativeBuild
 /app/release
 /app/.cxx
+/wear/.cxx
+/wear/build
 gradle/wrapper/gradle-wrapper.jar
 /distribution/*
 /distribution.video/*