docs: adding the workflow yaml and the default from docs-template (#2064)

## Description
Adding a documentation workflow to the frontend repository based on the
`docs-template` repository . This provides unified styling for all
documentation across the SciCat project space.


## Motivation
We want to put documentation next to the microservices , instead of
having a single documentation repository which is hard to maintain. We
want the styling and CI of the docs to be consistent across the SciCat
Project.



## Changes:
* added default `mkdocs.yml` to `.github/mkdocs` path
* added `publish-docs.yml` workflow

## Summary by Sourcery

Set up documentation deployment via GitHub Actions and provide a default
mkdocs configuration for unified styling.

CI:
- Add publish-docs.yml workflow to deploy documentation on pushes to
main and version tags using the docs-template action

Documentation:
- Add default mkdocs.yml in .github/mkdocs inheriting from the shared
docs-template configuration

---------

Co-authored-by: Carlo Minotti <[email protected]>

Author: LAShemilt

.github/mkdocs/mkdocs.yml

@@ -0,0 +1,5 @@
+INHERIT: mkdocs-default.yml
+# nav:
+#   - index.md
+#   - Example.md
+#   - About: about/index.md

.github/workflows/publish-docs.yml

@@ -0,0 +1,17 @@
+name: Deploy docs
+
+on:  # yamllint disable-line rule:truthy
+  push:
+    branches:
+      - master
+    tags:
+      - v*
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: SciCatProject/docs-template/.github/actions/[email protected]
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          push: true