android: support check bluetooth permission for api 31

Author: zxcpoiu

android/src/main/java/com/zxcpoiu/incallmanager/AppRTC/AppRTCBluetoothManager.java

@@ -21,6 +21,7 @@
 import android.content.IntentFilter;
 import android.content.pm.PackageManager;
 import android.media.AudioManager;
+import android.os.Build;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Process;
@@ -226,7 +227,8 @@ public State getState() {
    */
   public void start() {
     Log.d(TAG, "start");
-    if (!hasPermission(apprtcContext, android.Manifest.permission.BLUETOOTH)) {
+    String p = Build.VERSION.SDK_INT >= Build.VERSION_CODES.S ? android.Manifest.permission.BLUETOOTH_CONNECT : android.Manifest.permission.BLUETOOTH;
+    if (!hasPermission(apprtcContext, p)) {
       Log.w(TAG, "Process (pid=" + Process.myPid() + ") lacks BLUETOOTH permission");
       return;
     }