feat(store): Add android & iOS support (#1011)

* update cli

* init android module

* upgdate gitignore

* add desktop and mobile

* android

* ios

* lib

* remove comment

* cargo fmt

* skip empty file creation

* android comments

* apple path

* Discard changes to plugins/store/ios/README.md

* stop auto directories creation

* Update README.md

plugins/store/src/desktop.rs

@@ -0,0 +1,49 @@
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
+use crate::Error;
+use crate::Runtime;
+use crate::Store;
+use std::fs::create_dir_all;
+use std::fs::read;
+use std::fs::File;
+use std::io::Write;
+use tauri::Manager;
+
+#[cfg(desktop)]
+impl<R: Runtime> Store<R> {
+    pub fn save(&self) -> Result<(), Error> {
+        let app_dir = self
+            .app
+            .path()
+            .app_data_dir()
+            .expect("failed to resolve app dir");
+        let store_path = app_dir.join(&self.path);
+
+        create_dir_all(store_path.parent().expect("invalid store path"))?;
+
+        let bytes = (self.serialize)(&self.cache).map_err(Error::Serialize)?;
+        let mut f = File::create(&store_path)?;
+        f.write_all(&bytes)?;
+
+        Ok(())
+    }
+
+    /// Update the store from the on-disk state
+    pub fn load(&mut self) -> Result<(), Error> {
+        let app_dir = self
+            .app
+            .path()
+            .app_data_dir()
+            .expect("failed to resolve app dir");
+        let store_path = app_dir.join(&self.path);
+
+        let bytes = read(store_path)?;
+
+        self.cache
+            .extend((self.deserialize)(&bytes).map_err(Error::Deserialize)?);
+
+        Ok(())
+    }
+}