Documentation integration (#4653)

* Add documentation under docs/ directory

* Add CI workflow for mkdocs configuration checking

* Add documentation issue template

* update pip-tools?

* Update .gitignore files

* Fix .gitignore rules

* Improve release notes page

* remove references to old repo

docs/docs/api/browse.md

@@ -0,0 +1,37 @@
+---
+title: Interactive API
+---
+
+## Interactive API
+
+If the server is running in [Debug Mode](../start/intro.md#debug-mode) then an interactive version of the API is available using a browser.
+
+!!! info "Debug Mode"
+    This interactive API is only available when running the server in debug mode
+
+!!! warning "Slow Traffic Ahead"
+    The interactive API is *significantly* slower than using the normal JSON format. It is provided only for development and testing.
+
+### List View
+
+Various list endpoints can be displayed as shown below:
+
+{% with id="api_browse", url="api/api_browse.png", description="List API" %}
+{% include 'img.html' %}
+{% endwith %}
+
+### Filtering
+
+List views can be filtered interactively:
+
+{% with id="api_filter", url="api/api_filters.png", description="Filter API" %}
+{% include 'img.html' %}
+{% endwith %}
+
+### Detail View
+
+Detail view endpoints can also be displayed:
+
+{% with id="api_detail", url="api/api_detail.png", description="Detail API" %}
+{% include 'img.html' %}
+{% endwith %}