initial commit

README.md

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+# Set up UV
+
+## Sample CI
+
+```yaml
+name: Lint CI
+on: [ push ]
+
+jobs:
+  ty:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+      - name: Set up UV
+        uses: actions/setup-uv@v1
+      - name: Run ty check
+        run: python3 -m uv run ty check --output-format github
+```

action.yml

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+name: "Set up UV"
+description: "Install uv and sync dependencies"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Pip install uv
+      shell: bash
+      run: python3 -m pip install uv --break-system-packages
+
+    - name: Sync dependencies
+      shell: bash
+      run: |
+        [ ! -f uv.lock ] || uv sync