added github workflow to generate docs

.workflows/docs.yml

@@ -0,0 +1,37 @@
+# This is a basic workflow to help you get started with Actions
+
+name: CI
+
+# Controls when the workflow will run
+on:
+  # Triggers the workflow on push or pull request events but only for the "master" branch
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  docs:
+    runs-on: ubuntu-latest
+    name: Build and Test
+    steps:
+      - name: checkout
+        uses: actions/checkout@v3
+      - name: setup
+        uses: mlugg/setup-zig@v2
+        with:
+          version: master
+      - name: install dependencies
+        run: sudo apt install -y libwayland-dev libxkbcommon-dev xorg-dev glslc
+      - name: build docs
+        run: zig build docs
+      - name: archive docs
+        uses: actions/upload-artifact@v4
+        with:
+          name: docs
+          path: |
+            zig-out/docs