Add actions

.github/workflows/build.yml

@@ -0,0 +1,36 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - version/*
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: wasm32-unknown-unknown
+
+      - name: Cache
+        uses: Swatinem/rust-cache@v2
+
+      - name: Install trunk
+        uses: taiki-e/install-action@v2
+        with:
+          tool: trunk
+
+      - name: Build
+        run: trunk build --public-url . --release
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: build
+          path: dist

.github/workflows/deploy.yml

@@ -0,0 +1,88 @@
+name: Deploy
+
+on:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  id-token: write
+  pages: write
+
+jobs:
+  get-versions:
+    runs-on: ubuntu-latest
+
+    outputs:
+      versions: ${{ steps.versions.outputs.versions }}
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: pages
+          fetch-depth: 0
+
+      - name: Get versions
+        id: versions
+        run: echo "versions=$(git branch -r --format '%(refname:lstrip=3)' | sed -nr 's/version\/(.+)/\1/p' | jq -cRn '[inputs]')" >> "$GITHUB_OUTPUT"
+
+  get-artifacts:
+    needs:
+      - get-versions
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        version: ${{ fromJson(needs.get-versions.outputs.versions) }}
+
+    steps:
+      - name: Download artifact
+        uses: dawidd6/action-download-artifact@v3
+        with:
+          workflow: build.yml
+          branch: ${{ format('version/{0}', matrix.version) }}
+          name: build
+          name_is_regexp: false
+          path: build
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.version }}
+          path: build
+          retention-days: 1
+
+  deploy:
+    needs:
+      - get-artifacts
+
+    runs-on: ubuntu-latest
+
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: pages
+
+      - name: Download artifacts
+        uses: actions/download-artifact@v4
+
+      - name: Create home page
+        run: python3 deploy.py
+
+      - name: Setup pages
+        uses: actions/configure-pages@v5
+
+      - name: Upload pages artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: .
+
+      - name: Deploy pages
+        id: deployment
+        uses: actions/deploy-pages@v4