chore(store): add AppSettings example (#573)

* basic example foundation

* add examples to workspace

* cleanup and load fix

* fmt

* reset lockfile

---------

Co-authored-by: FabianLars <fabianlars@fabianlars.de>

plugins/store/examples/AppSettingsManager/src-tauri/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    tauri_build::build()
+}