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/android/src/main/java/StorePlugin.kt

@@ -0,0 +1,50 @@
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
+package app.tauri.store
+
+import android.app.Activity
+import app.tauri.annotation.Command
+import app.tauri.annotation.TauriPlugin
+import app.tauri.plugin.Invoke
+import app.tauri.plugin.Plugin
+import com.fasterxml.jackson.databind.JsonNode
+import com.fasterxml.jackson.databind.ObjectMapper
+import java.io.File
+
+@TauriPlugin
+class StorePlugin(private val activity: Activity) : Plugin(activity) {
+    @Command
+    fun load(invoke: Invoke) {
+        try {
+            val path = invoke.parseArgs(String::class.java)
+            val file = File(activity.applicationContext.getExternalFilesDir(null), path)
+
+            invoke.resolveObject(ObjectMapper().readTree(file))
+        } catch (ex: Exception) {
+            invoke.reject(ex.message)
+        }
+    }
+
+    @Command
+    fun save(invoke: Invoke) {
+        try {
+            val args = invoke.parseArgs(JsonNode::class.java)
+            val path = args.get("store").asText()
+            val cache = args.get("cache")
+            val file = File(activity.applicationContext.getExternalFilesDir(null), path)
+
+            if (!file.exists()) {
+                file.parentFile?.mkdirs()
+                file.createNewFile()
+            }
+
+            file.writeText(cache.toString())
+
+            invoke.resolve()
+        } catch (ex: Exception) {
+            invoke.reject(ex.message)
+        }
+    }
+}