➕ Add flutter webrtc

⬇️ Downgrade analyzer & custom lint for fix flutter new version related bugs

lib/pods/call.g.dart

@@ -0,0 +1,27 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'call.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+String _$callNotifierHash() => r'a910dfa778c42888f8b8e5ab199b25ce8a74392b';
+
+/// See also [CallNotifier].
+@ProviderFor(CallNotifier)
+final callNotifierProvider =
+    AutoDisposeNotifierProvider<CallNotifier, CallState>.internal(
+      CallNotifier.new,
+      name: r'callNotifierProvider',
+      debugGetCreateSourceHash:
+          const bool.fromEnvironment('dart.vm.product')
+              ? null
+              : _$callNotifierHash,
+      dependencies: null,
+      allTransitiveDependencies: null,
+    );
+
+typedef _$CallNotifier = AutoDisposeNotifier<CallState>;
+// ignore_for_file: type=lint
+// ignore_for_file: subtype_of_sealed_class, invalid_use_of_internal_member, invalid_use_of_visible_for_testing_member, deprecated_member_use_from_same_package