Android Support (#166)

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

easytier-gui/src-tauri/Cargo.toml

@@ -7,6 +7,10 @@ edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[lib]
+name = "app_lib"
+crate-type = ["staticlib", "cdylib", "rlib"]
+
 [build-dependencies]
 tauri-build = { version = "2.0.0-beta", features = [] }
 
@@ -34,6 +38,8 @@ tauri-plugin-shell = "2.0.0-beta.8"
 tauri-plugin-process = "2.0.0-beta.7"
 tauri-plugin-clipboard-manager = "2.1.0-beta.5"
 tauri-plugin-positioner = { version = "2.0.0-beta", features = ["tray-icon"] }
+tauri-plugin-vpnservice = { path = "../../tauri-plugin-vpnservice" }
+tauri-plugin-os = "2.0.0-beta.7"
 
 [features]
 # This feature is used for production builds or when a dev server is not specified, DO NOT REMOVE!!