feat: Add webcam basic support

toju-app/src/app/store/users/users.reducer.ts

@@ -212,6 +212,23 @@ export const usersReducer = createReducer(
       state
     );
   }),
+  on(UsersActions.updateCameraState, (state, { userId, cameraState }) => {
+    const prev = state.entities[userId]?.cameraState || {
+      isEnabled: false
+    };
+
+    return usersAdapter.updateOne(
+      {
+        id: userId,
+        changes: {
+          cameraState: {
+            isEnabled: cameraState.isEnabled ?? prev.isEnabled
+          }
+        }
+      },
+      state
+    );
+  }),
   on(UsersActions.syncUsers, (state, { users }) =>
     usersAdapter.upsertMany(users, state)
   ),