add gh pages publishing workflow

Author: Archmonger

.github/workflows/publish-docs.yml

@@ -0,0 +1,17 @@
+name: Publish Docs
+on:
+    push:
+        branches:
+            - new-docs
+jobs:
+    deploy:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v3
+              with:
+                  fetch-depth: 0
+            - uses: actions/setup-python@v4
+              with:
+                  python-version: 3.x
+            - run: pip install -r requirements/build-docs.txt
+            - run: mkdocs gh-deploy --force