docs: build docs index dynamically

Author: minottic

.github/workflows/publish-docs.yml

@@ -11,7 +11,10 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: SciCatProject/docs-template/.github/actions/mkdocs-pages@v0.0.1
+      - uses: SciCatProject/docs-template/.github/actions/mkdocs-pages@v0.1.0
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           push: true
+          # if this file does not need to exist locally, the one in the action is used
+          # https://github.com/SciCatProject/docs-template/blob/v0.1.0/.github/actions/mkdocs-pages/mkdocs-nested.yml
+          docs_config: .github/actions/mkdocs-pages/mkdocs-nested.yml