Feat/OIDC middleware (#50)

* implement OIDC middleware

* auth code cleanup

* allow override allowed_user in middleware, fix typos

* fix tests and callbackURL

* update next release docs

* fix OIDC middleware not working with Authentik

* feat: add groups support for OIDC claims (#41)

Allow users to specify allowed groups in the env and use it to inspect the claims.

This performs a logical AND of users and groups (additive).

* merge feat/oidc-middleware (#49)

* api: enrich provider statistifcs

* fix: docker monitor now uses container status

* Feat/auto schemas (#48)

* use auto generated schemas

* go version bump and dependencies upgrade

* clarify some error messages

---------

Co-authored-by: yusing <yusing@6uo.me>

* cleanup some loadbalancer code

* api: cleanup websocket code

* api: add /v1/health/ws for health bubbles on dashboard

* feat: experimental memory logger and logs api for WebUI

---------

Co-authored-by: yusing <yusing@6uo.me>

---------

Co-authored-by: yusing <yusing@6uo.me>
Co-authored-by: Peter Olds <peter@olds.co>

next-release.md

@@ -73,6 +73,26 @@ GoDoxy v0.8.2 expected changes
   * Connection #0 to host localhost left intact
   ```
 
+- **Thanks [polds](https://github.com/polds)**
+  Support WebUI authentication via OIDC by setting these environment variables:
+  - `GODOXY_OIDC_ISSUER_URL` e.g.:
+    - Pocket ID: `https://pocker-id.yourdomain.com`
+    - Authentik: `https://authentik.yourdomain.com/application/o/<application_slug>/` **The ending slash is required**
+  - `GODOXY_OIDC_CLIENT_ID`
+  - `GODOXY_OIDC_CLIENT_SECRET`
+  - `GODOXY_OIDC_REDIRECT_URL`
+  - `GODOXY_OIDC_SCOPES` _(optional)_
+  - `GODOXY_OIDC_ALLOWED_USERS`
+
+- Use OpenID Connect to authenticate GoDoxy's WebUI and all your services (SSO)
+  ```yaml
+    # default
+  proxy.app.middlewares.oidc:
+
+  # override allowed users
+  proxy.app.middlewares.oidc.allowed_users: user1, user2
+  ```
+
 - Caddyfile like rules
 
   ```yaml