Various improvements (#614)

- Auto-select widgets in Launcher and apps with toolbars on devices without touch.
- Improved USB HID input reliability, cleanup
- Updated PSRAM settings to improve boot stability on supported devices.
- Prevented duplicate Wi-Fi event subscriptions during screen rebuilds.
- Updated docs
- Fixes in WifiManage and WifiConnect
- Reduced main task stack size
- Moved USB HID stack size to PSRAM when available
- app_manager_find_manifest() now returns a copy instead of a pointer

Modules/app-module/include/app/manager.h

@@ -27,8 +27,12 @@ error_t app_manager_add(const struct AppManifest* manifest);
  */
 error_t app_manager_remove(const char* id);
 
-/** @return the manifest, or NULL if not found. */
-const struct AppManifest* app_manager_find_manifest(const char* id);
+/**
+ * @param[out] out_manifest set to a copy of the manifest on success
+ * @retval ERROR_NOT_FOUND no manifest with this id is registered
+ * @retval ERROR_NONE on success
+ */
+error_t app_manager_find_manifest(const char* id, struct AppManifest* out_manifest);
 
 /**
  * Calls `@a` visitor once for every registered manifest. Iteration order is unspecified.