[docs] Zensical docs (#13253)

* add zensical workflow

* rebuild schema dynamically

* load in new module

* Use zensical for docs invoke tasks

* modern

* improved carousel layout

* Increased content width

* fix for app icons

* Ensure schema dir exists

* remove unused requirement

* update readthedocs process

* fix polar.sh link

* adjust link checker pattern

* Revert some of the original style

* remove legacy mkdocs requirements

* fix for ready.py

* reduce db warnings during schema generation

* Adjust padding

* fix index issues

* fix page title

* fix pages with broken or missing headers

* split data import API schema

* cleanup old carousel

* remove djlint link

.github/workflows/release.yaml

@@ -129,7 +129,7 @@ jobs:
           pip install --require-hashes --only-binary :all: -r docs/requirements.txt
       - name: Build documentation
         run: |
-          invoke build-docs --mkdocs
+          invoke build-docs --build
       - name: Zip build docs
         run: |
           cd docs/site