Screensharing rework

Split Linux screensharing audio tracks, Rework screensharing functionality and layout
This will need some refactoring soon

src/app/features/voice/screen-share-workspace/screen-share-workspace.models.ts

@@ -0,0 +1,9 @@
+import { User } from '../../../core/models';
+
+export interface ScreenShareWorkspaceStreamItem {
+  id: string;
+  peerKey: string;
+  user: User;
+  stream: MediaStream;
+  isLocal: boolean;
+}