feat(call): add docked call panel and remote cursor overlay

- Implemented DockedCallPanel component to render the docked call interface when an active call is present.
- Created RemoteCursorOverlay component to display remote cursor positions during screen sharing.
- Added hooks for managing docked call state and remote cursor functionality.
- Introduced pending drag state management for seamless transitions between docked and floating states.
- Developed embed filter management components for personal and room-wide settings, allowing users to customize URL embed visibility.
- Implemented auto-joining functionality for rooms within spaces, enhancing user experience during space navigation.
- Added state management for tracking joining progress of rooms in spaces.

src/app/features/call/useDockedCall.ts

@@ -0,0 +1,18 @@
+import { useSetting } from '../../state/hooks/settings';
+import { settingsAtom } from '../../state/settings';
+import { useCall } from './useCall';
+import { CallState } from './types';
+
+/**
+ * Hook to determine if the call panel should be rendered docked
+ * Returns true if there's an active call AND the panel is set to docked mode
+ */
+export function useIsCallDocked(): boolean {
+  const { activeCall } = useCall();
+  const [isDocked] = useSetting(settingsAtom, 'isCallPanelDocked');
+  
+  const hasActiveCall = activeCall && 
+    (activeCall.state === CallState.Connecting || activeCall.state === CallState.Connected);
+  
+  return Boolean(hasActiveCall && isDocked);
+}