Adds github workflow to build documentation

Author: michalbundyra

.github/workflows/docs-build.yml

@@ -0,0 +1,16 @@
+name: docs-build
+
+on:
+  push:
+    branches:
+      - master
+  repository_dispatch:
+
+jobs:
+  build-deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Build Docs
+        uses: laminas/documentation-theme/github-actions/docs@master
+        env:
+          DOCS_DEPLOY_KEY: ${{ secrets.DOCS_DEPLOY_KEY }}