Add proxy docs to README

Author: bommbomm34

README.md

@@ -222,13 +222,26 @@ Commands:
 state.webSettings.customUserAgentString = "MyApp/1.2.3"
 ```
 
-Desktop note:
+
+
+### Proxy (desktop only)
+
+```kotlin
+// HTTP CONNECT Proxy
+state.webSettings.desktopWebSettings.proxyConfig = ProxyConfig.Http("proxy.tld", 8888)
+// SOCKS5 Proxy
+state.webSettings.desktopWebSettings.proxyConfig = ProxyConfig.Socks5("proxy.tld", 1080)
+```
+
+Proxy is only supported on Windows, macOS 14.0+ and Linux.
+
+Desktop note on both user-agent and proxy:
 
 * applied at creation time
 * changing it **recreates** the WebView (debounced)
 * JS context/history may be lost
 
-👉 Set it early.
+👉 Set them early.
 
 ---