feat(videocall): add native permissions for video calling

Android: RECORD_AUDIO, ACCESS_WIFI_STATE, MODIFY_AUDIO_SETTINGS,
BLUETOOTH permissions + camera/bluetooth uses-feature + ProGuard
rules for Juphoon/JusTalk.

iOS: NSMicrophoneUsageDescription, NSPhotoLibraryUsageDescription,
updated NSCameraUsageDescription + Podfile GCC_PREPROCESSOR_DEFINITIONS
for camera, photos and microphone permissions.

apps/mobile_app/android/app/proguard-rules.pro

@@ -21,3 +21,11 @@
 -dontwarn com.huawei.hms.location.LocationServices
 -dontwarn com.huawei.hms.push.RemoteMessage
 -dontwarn com.huawei.hms.security.SecComponentInstallWizard
+
+## Juphoon jc_sdk
+-dontwarn com.juphoon.*
+-keep class com.juphoon.**{*;}
+-dontwarn com.justalk.*
+-keep class com.justalk.**{*;}
+-keepattributes InnerClasses
+-keep class **.R$* {*;}