feat(workflows): add CI/CD pipeline for static site

Set up a GitHub Actions workflow to build and deploy the static site from the 'static' branch to the 'pages' branch. This workflow includes steps to install dependencies, generate the static site using Python, and handle deployment through Git configuration and git commands.

.forgejo/workflows/build.yml

@@ -0,0 +1,50 @@
+name: Build and Deploy Static Site
+
+on:
+  push:
+    branches:
+      - static
+
+jobs:
+  build:
+    runs-on: node:20-bookworm
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Install dependencies
+        run: |
+          apt update
+          apt install -y python3 python3-pip
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+
+      - name: Generate static site
+        run: python main.py
+
+      - name: Deploy to pages branch
+        run: |
+          # Configure Git
+          git config --global user.name "Forgejo"
+          git config --global user.email "noreply@private.coffee"
+
+          # Move generated static site files to a temporary location
+          mv build ../static_site_temp
+
+          # Create a new orphan branch named 'pages'
+          git checkout --orphan pages
+
+          # Remove all files from the working directory
+          git rm -rf .
+
+          # Move the static site files back to the working directory
+          mv ../static_site_temp/* ./
+          mv ../static_site_temp/.* ./ 2>/dev/null || true
+
+          # Add and commit the static site files
+          git add .
+          git commit -m "Deploy static site"
+
+          # Force push to the 'pages' branch
+          git push origin pages --force