Add github workflows

.github/workflows/ci.yml

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+# TODO: Uncomment when test suite is written
+# name: Crystal CI
+# on:
+#   pull_request:
+#     branches: [ "main" ]
+# jobs:
+#   build:
+#     runs-on: ubuntu-latest
+#     steps:
+#       - uses: actions/setup-node@v4
+#         with:
+#           node-version: 20.x
+#       - uses: crystal-lang/install-crystal@v1
+#         with:
+#           crystal: 1.6.2
+#       - name: Download source
+#         uses: actions/checkout@v4
+#       - name: Install dependencies
+#         run: shards install
+#       - name: Run tests
+#         run: crystal spec

.github/workflows/docs.yml

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+name: Crystal Docs Generation
+
+on:
+  push:
+    branches: [ "main" ]
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/setup-node@v4
+      with:
+        node-version: 20.x
+    - uses: crystal-lang/install-crystal@v1
+      with:
+        crystal: 1.6.2
+    - uses: actions/checkout@v4
+    - name: Generate docs
+      run: crystal docs
+    - name: Move docs to _site
+      run: mv docs/ _site/
+    - name: Upload artifact
+      uses: actions/upload-pages-artifact@v3
+
+  # Deployment job
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4