feat(mobile): add cast support (#18341)

* initial cast framework complete and mocked cast dialog working

* wip casting

* casting works!

just need to add session key check and remote video controls

* cleanup of classes

* add session expiration checks

* cast dialog now shows connected device at top of list with a list header. Discovered devices are also cached for app session.

* cast video player finalized

* show fullsize assets on casting

* translation already happens on the text element

* remove prints

* fix lintings

* code review changes from @shenlong-tanwen

* fix connect method override

* fix alphabetization

* remove important

* filter chromecast audio devices

* fix some disconnect command ordering issues and unawaited futures

* remove prints

* only disconnect if we are connected

* don't try to reconnect if its the current device

* add cast button to top bar

* format sessions api

* more formatting issues fixed

* add snack bar to tell user that we cannot cast an asset that is not uploaded to server

* make casting icon change to primary color when casting is active

* only show casting snackbar if we are casting

* dont show cast button if asset is remote and we are not casting

* stop playing media if we seek to an asset that is not remote

* remove https check since it works with local http IP addresses

* remove unneeded imports

* fix recasting when socket closes

* fix info plist formatting

* only show cast button if there is an active websocket connection (ie the server is accessible)

* add device capability bitmask checks

* small comment about bitmask

mobile/pubspec.lock

@@ -81,6 +81,54 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "9.2.0"
+  bonsoir:
+    dependency: transitive
+    description:
+      name: bonsoir
+      sha256: "2e2cf3be580deccad9a48dcaddddf90de092e74b7de2015ef58fb24e11d66496"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.1.11"
+  bonsoir_android:
+    dependency: transitive
+    description:
+      name: bonsoir_android
+      sha256: "9a65b6e50c5718c3f1a7ed6ff57ab9ed8ae990ff9c36d2b1ab3d1b90f28f7d1b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.1.6"
+  bonsoir_darwin:
+    dependency: transitive
+    description:
+      name: bonsoir_darwin
+      sha256: "2d25c70f0d09260be1c2ab583b80dd89cbbfd59997579dadf789c5af00c7b2e4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.1.3"
+  bonsoir_linux:
+    dependency: transitive
+    description:
+      name: bonsoir_linux
+      sha256: f2639aded6e15943a9822de98a663a1056f37cbfd0a74d72c9eaa941965945c2
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.1.3"
+  bonsoir_platform_interface:
+    dependency: transitive
+    description:
+      name: bonsoir_platform_interface
+      sha256: "08bb8b35d0198168b3bce87dbc718e4e510336cff1d97e43762e030c01636d45"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.1.3"
+  bonsoir_windows:
+    dependency: transitive
+    description:
+      name: bonsoir_windows
+      sha256: d4a0ca479d4f3679487a61f3174fb9fe1651e323c778b02dfa630490366be65d
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.1.5"
   boolean_selector:
     dependency: transitive
     description:
@@ -193,6 +241,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.0"
+  cast:
+    dependency: "direct main"
+    description:
+      name: cast
+      sha256: de1856e1a31aa60a6fed627f827921f7ec6539c67c60d0c899e89646dcbe773e
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.0"
   characters:
     dependency: transitive
     description:
@@ -1404,6 +1460,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "5.0.3"
+  protobuf:
+    dependency: transitive
+    description:
+      name: protobuf
+      sha256: "68645b24e0716782e58948f8467fd42a880f255096a821f9e7d0ec625b00c84d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.0"
   pub_semver:
     dependency: transitive
     description: