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/styles.css

@@ -45,3 +45,11 @@
   border-radius: 4px;
   background-color: #0000005d;
 }
+
+.p-password {
+  width: 100%;
+}
+
+.p-password>input {
+  width: 100%;
+}