Adds workflow to build and publish Rust docs

.github/workflows/publish-docs.yml

@@ -0,0 +1,31 @@
+name: Build Docs 📝
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Generate docs
+        uses: actions-rs/cargo@v1
+        with:
+          command: doc
+          args: --no-deps
+
+      - name: Create index.html
+        run: echo "<meta http-equiv=\"refresh\" content=\"0; url=adguardian/index.html\">" > target/doc/index.html
+
+      - name: Publish docs
+        uses: peaceiris/[email protected]
+        with:
+          github_token: ${{ secrets.BOT_TOKEN || secrets.GITHUB_TOKEN }}
+          publish_dir: ./target/doc
+          publish_branch: docs-src
+          # cname: adguardian-term.as93.net