Add GitHub action to autogenerate ref docs on commut to master.

Author: taeold

.github/workflows/docs.yaml

@@ -0,0 +1,33 @@
+name: docs
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  docs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: "20"
+      - name: Cache npm
+        uses: actions/cache@v1
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-docgen-${{ hashFiles('**/package-lock.json') }}
+      - name: Install dependencies
+        run: npm ci
+      - name: Generate Reference Docs
+        run: |
+          npm run docgen:v1
+          npm run docgen:v2
+      - uses: actions/upload-artifact@v3
+        name: Upload Docs Preview
+        with:
+          name: reference-docs
+          path: |
+            ./docgen/v1/markdown/
+            ./docgen/v2/markdown/