phone: third «Пульт» tab with on-glasses cursor; atomic click injection

- shared: VmDisplay (guest 640x480 coordinate space), CursorMove and
  CursorClick messages (CursorClick replaces the DOWN/UP pair — see below).
- glasses: cursor state + Canvas overlay drawn in both eyes, clickCursor
  injects one atomic tap at the cursor, sendKey for Back/Play/Pause.
- phone: RemoteScreen — touchpad (relative drag moves the cursor, tap
  clicks), «Назад»/«Плей»/«Пауза» buttons, «Клавиатура» stub (TODO).
- The old CursorButton(DOWN)/CursorButton(UP) pair was removed: the two
  messages were injected concurrently and could arrive out of order,
  breaking the guest's touch stream so clicks worked only once.
- tests: CursorMove/CursorClick roundtrips.

app-glasses-vm/src/main/kotlin/pw/binom/rayneovm/glasses/VmService.kt

@@ -32,6 +32,8 @@ import pw.binom.rayneovm.shared.VmProtocol
 import pw.binom.rayneovm.shared.GetAppList
 import pw.binom.rayneovm.shared.AppEntry
 import pw.binom.rayneovm.shared.AppListResponse
+import pw.binom.rayneovm.shared.CursorClick
+import pw.binom.rayneovm.shared.CursorMove
 
 /**
  * Foreground service на стороне очков.
@@ -119,7 +121,18 @@ class VmService : LifecycleService() {
                 controller.launchGuest(msg.packageName)
             }
             is TouchEvent -> Log.d(TAG, "Touch: ${msg.actions.size}")
-            is VmKeyEvent -> Log.d(TAG, "Key: ${msg.keyCode}")
+            is CursorMove -> {
+                Log.d(TAG, "CursorMove: ${msg.x},${msg.y}")
+                controller.moveCursor(msg.x, msg.y)
+            }
+            is CursorClick -> {
+                Log.d(TAG, "CursorClick")
+                controller.clickCursor()
+            }
+            is VmKeyEvent -> {
+                Log.d(TAG, "Key: ${msg.keyCode} action=${msg.action}")
+                controller.sendKey(msg.keyCode, msg.action)
+            }
             is SetAudioMode -> Log.d(TAG, "SetAudioMode: ${msg.mode}")
             is Shutdown -> {
                 Log.i(TAG, "Shutdown")