bump version to v2.3.0 (#859)

also some improvements:

1. add magic dns option in gui.
2. allow icmp proxy fail on android
3. when no_tun is enabled, android do not start vpn service

Co-authored-by: Your Name <you@example.com>

easytier-gui/src-tauri/tauri.conf.json

@@ -17,7 +17,7 @@
     "createUpdaterArtifacts": false
   },
   "productName": "easytier-gui",
-  "version": "2.2.4",
+  "version": "2.3.0",
   "identifier": "com.kkrainbow.easytier",
   "plugins": {},
   "app": {