Add preliminary traefik proxy guide to docs.

Signed-off-by: Jason Volk <jason@zemos.net>

docs/deploying/reverse-proxy-traefik.md

@@ -0,0 +1,29 @@
+# Reverse Proxy Setup - Traefik
+
+[<= Back to Generic Deployment Guide](generic.md#setting-up-the-reverse-proxy)
+
+## Installation
+
+_This section is incomplete. Please consider contributing to it._
+
+## Configuration
+
+_This section is incomplete. Please consider contributing to it._
+
+> [!IMPORTANT]
+>
+> [Encoded Character Filtering](https://doc.traefik.io/traefik/security/request-path/#encoded-character-filtering)
+> options must be set to `true`.
+
+## Verification
+
+After starting Traefik, verify it's working by checking:
+
+```bash
+curl https://your.server.name/_tuwunel/server_version
+curl https://your.server.name:8448/_tuwunel/server_version
+```
+
+---
+
+[=> Continue with "You're Done"](generic.md#you-are-done)