feat(template): add mobile projects, build script, fill initial src code (#305)

shared/template/src/models.rs

@@ -0,0 +1,17 @@
+// Copyright 2019-2023 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PingRequest {
+    pub value: Option<String>,
+}
+
+#[derive(Debug, Clone, Default, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PingResponse {
+    pub value: Option<String>,
+}