🤖 Re-enables docs site build automation

.github/workflows/build-docs-site.yml

@@ -0,0 +1,18 @@
+# Builds and published Dashy's documentation website
+name: Build Docs Site
+on:
+  workflow_dispatch:
+  push:
+    branches: [ WEBSITE/docs-site-source ]
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/WEBSITE/docs-site-source'
+    steps:
+      - uses: actions/checkout@master
+      - uses: redkubes/docusaurus-deploy-action@v1
+        with:
+          source-folder: ./
+          git-user: ${{ github.actor }}
+          git-password: ${{ secrets.GITHUB_TOKEN }}
+          deployment-branch: gh-pages