Add hardware api for camera, audio input/output selection. (#147)

* chore: Add hardware api for device settings dialog, camera preview, audio input/output selection.

* update.

* update flutter-webrtc.

* chore: add popupmenu for audio/video selection.

* chore: Improve menu tooltip text.

* Removed hardware settings dialog, added it to experimental branch.

* remove unused code.

* Respond to device changes.

* fixed `flutter analyze`.

* update.

* bump verion to v1.1.1.

pubspec.yaml

@@ -1,7 +1,7 @@
 name: livekit_client
 description: Flutter Client SDK for LiveKit.
   Build real-time video and audio into your apps. Supports iOS, Android, and Web.
-version: 1.1.0-hotfix
+version: 1.1.1
 homepage: https://livekit.io
 
 environment:
@@ -22,7 +22,7 @@ dependencies:
   uuid: ^3.0.6
   synchronized: ^3.0.0
   protobuf: ^2.0.1
-  flutter_webrtc: ^0.9.3
+  flutter_webrtc: ^0.9.4
   dart_webrtc: ^1.0.7
   device_info_plus: ^3.2.3