Merge develop into main (#343)

- Refactor `AppManifest`: add new fields and rename existing ones
- Parse and validate the manifest from an app that is being installed.
- Remove deprecated `scoped()` from `Lock`
- Create `Tactility/Paths.h`
- App loading at boot now properly parses the manifest files of external apps
- Properly lock both source and destination locations during app install
- Remove LVGL path variants from `AppPaths` and `ServicePaths`
- Removed `xPath` base classes for apps and services. There's now `AppPaths` and `ServicePaths`.
- Renamed app and service paths: "data" and "system" paths are now "user data" and "assets"

Tactility/Source/app/power/Power.cpp

@@ -22,7 +22,7 @@ class PowerApp;
 /** Returns the app data if the app is active. Note that this could clash if the same app is started twice and a background thread is slow. */
 std::shared_ptr<PowerApp> _Nullable optApp() {
     auto appContext = getCurrentAppContext();
-    if (appContext != nullptr && appContext->getManifest().id == manifest.id) {
+    if (appContext != nullptr && appContext->getManifest().appId == manifest.appId) {
         return std::static_pointer_cast<PowerApp>(appContext->getApp());
     } else {
         return nullptr;
@@ -189,10 +189,10 @@ public:
 };
 
 extern const AppManifest manifest = {
-    .id = "Power",
-    .name = "Power",
-    .icon = TT_ASSETS_APP_ICON_POWER_SETTINGS,
-    .category = Category::Settings,
+    .appId = "Power",
+    .appName = "Power",
+    .appIcon = TT_ASSETS_APP_ICON_POWER_SETTINGS,
+    .appCategory = Category::Settings,
     .createApp = create<PowerApp>
 };