chore(themes): add new themes api v2, add in-app theme editor/creator, macos compatibility, fix asset loading, rework settings and setup wizard

src-tauri/capabilities/default.json

@@ -1,9 +1,10 @@
 {
   "$schema": "../gen/schemas/desktop-schema.json",
   "identifier": "default",
-  "description": "Capability for the main window",
+  "description": "Capabilities for the main launcher and theme editor windows",
   "windows": [
-    "main"
+    "main",
+    "theme-editor"
   ],
   "permissions": [
     "core:default",