Android Support (#166)

1. Add vpnservice tauri plugin for android.
2. add workflow for android.
3. Easytier Core support android, allow set tun fd.

tauri-plugin-vpnservice/src/lib.rs

@@ -0,0 +1,45 @@
+use tauri::{
+    plugin::{Builder, TauriPlugin},
+    Runtime,
+};
+
+#[cfg(mobile)]
+use tauri::Manager;
+
+#[cfg(mobile)]
+mod mobile;
+
+#[cfg(mobile)]
+use mobile::Vpnservice;
+
+mod error;
+mod models;
+
+pub use error::{Error, Result};
+
+/// Extensions to [`tauri::App`], [`tauri::AppHandle`] and [`tauri::Window`] to access the vpnservice APIs.
+#[cfg(mobile)]
+pub trait VpnserviceExt<R: Runtime> {
+    fn vpnservice(&self) -> &Vpnservice<R>;
+}
+
+#[cfg(mobile)]
+impl<R: Runtime, T: Manager<R>> crate::VpnserviceExt<R> for T {
+    fn vpnservice(&self) -> &Vpnservice<R> {
+        self.state::<Vpnservice<R>>().inner()
+    }
+}
+
+/// Initializes the plugin.
+pub fn init<R: Runtime>() -> TauriPlugin<R> {
+    Builder::new("vpnservice")
+        .setup(|_app, _api| {
+            #[cfg(mobile)]
+            {
+                let vpnservice = mobile::init(_app, _api)?;
+                _app.manage(vpnservice);
+            }
+            Ok(())
+        })
+        .build()
+}