Добавить двуязычную документацию (русский и английский) (#1101)

docs/EN/CfProxy.md

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+# Cloudflare Proxy
+
+An alternative, free connection method is proxying through Cloudflare, which can be used for unreachable data centers. **All you need to get it working is a domain**. The application includes a default domain, but it can (and ideally should) be replaced with your own.
+  
+The proxy restores access to content that previously wouldn't load (reactions, certain stickers). If you are using a non-Premium account and photos/videos still fail to load, leave only `4:149.154.167.220` in the `DC → IP` block. If the CF proxy works, media will start loading again.
+
+## Why should I set up my own domain?
+
+Cloudflare limits the number of simultaneous WebSocket (WS) connections. The default domain could stop working at any moment.
+
+## Setting up your own domain
+
+1. Add your domain to Cloudflare (either by purchasing it directly from Cloudflare or by changing the NS servers: https://developers.cloudflare.com/dns/zone-setups/full-setup/setup/). Domains cost around $1.50–$2.00 per year, and any domain extension will work.
+
+2. In `SSL/TLS` → `Overview`, set the mode to **Flexible**.
+
+3. In `DNS` → `Records`, add the following `A` records via `+ Add Record`:
+- Name=`kws1`   IPv4=`149.154.175.50`
+- Name=`kws2`   IPv4=`149.154.167.51`
+- Name=`kws3`   IPv4=`149.154.175.100`
+- Name=`kws4`   IPv4=`149.154.167.91`
+- Name=`kws5`   IPv4=`149.154.171.5`
+- Name=`kws203` IPv4=`91.105.192.100`
+
+4. **Add your domain to [zapret](https://github.com/Flowseal/zapret-discord-youtube/) or any other DPI bypass software, as the Cloudflare subnet may be blocked (e.g., in Russia).**
+
+5. In the `TgWsProxy` settings, replace the default domain with your own.
+
+## Credits / Acknowledgments
+
+- Original Idea: https://github.com/Nekogram/WSProxy
+- Special thanks to [@UjuiUjuMandan](https://github.com/UjuiUjuMandan) for providing the information.