release v7.11.0 (#3145)

* add new docs version 7.11.x

* update to release version v7.11.0

* add changelog entry for v7.11.0

Signed-off-by: Jan Larwig <jan@larwig.com>

---------

Signed-off-by: Jan Larwig <jan@larwig.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Jan Larwig <jan@larwig.com>

docs/versioned_docs/version-7.11.x/welcome.md

@@ -0,0 +1,23 @@
+---
+id: welcome
+title: Welcome
+hide_table_of_contents: true
+slug: /
+---
+
+![OAuth2 Proxy](/img/logos/OAuth2_Proxy_horizontal.svg)
+
+A reverse proxy and static file server that provides authentication using Providers (Google, GitHub, and others)
+to validate accounts by email, domain or group.
+
+:::note
+This repository was forked from [bitly/OAuth2_Proxy](https://github.com/bitly/oauth2_proxy) on 27/11/2018.
+Versions v3.0.0 and up are from this fork and will have diverged from any changes in the original fork.
+A list of changes can be seen in the [CHANGELOG](https://github.com/oauth2-proxy/oauth2-proxy/blob/master/CHANGELOG.md).
+:::
+
+![Sign In Page](/img/sign-in-page.png)
+
+## Architecture
+
+![OAuth2 Proxy Architecture](/img/simplified-architecture.svg)