Fix Play/Pause media key not working out of focus

- Fix media key out of focus not working [86](https://github.com/Zaarrg/stremio-community-v5/issues/86)

src/main.cpp

@@ -122,6 +122,11 @@ int main(int argc, char* argv[])
         return 1;
     }
 
+    //Add PlayPause Hotkey
+    if (!RegisterHotKey(g_hWnd, 1, 0, VK_MEDIA_PLAY_PAUSE)) {
+        AppendToCrashLog(L"[BOOT]: Failed to register hotkey!");
+    }
+
     // Scale Values with DPI
     ScaleWithDPI();
     LoadCustomMenuFont();

src/ui/mainwindow.cpp

@@ -391,6 +391,15 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
         }
         break;
     }
+    case WM_HOTKEY:
+    {
+        // PlayPause Hotkey
+        if (wParam == 1) {
+            std::vector<std::string> args = {"cycle", "pause"};
+            HandleMpvCommand(args);
+        }
+        break;
+    }
     case WM_SETTINGCHANGE:
     {
         UpdateTheme(hWnd);

src/utils/crashlog.cpp

@@ -67,4 +67,6 @@ void Cleanup()
     }
 
     Discord_Shutdown();
+
+    UnregisterHotKey(g_hWnd, 1);
 }