Add testing workflow and dependencies

.github/workflows/pytest.yml

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+name: Pytest Check
+on: [pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Remove junk
+        uses: easimon/maximize-build-space@master
+        with:
+          root-reserve-mb: 512
+          swap-size-mb: 1024
+          remove-dotnet: "true"
+      - name: Checkout code
+        uses: nschloe/action-cached-lfs-checkout@v1
+
+      - name: Setup UV
+        uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+
+      - name: Run Tests
+        run: uv run --extra test pytest tests

.github/workflows/ruff.yml

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+name: Ruff
+on: [pull_request]
+jobs:
+  ruff:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: chartboost/ruff-action@v1

.github/workflows/types.yml

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+name: Type Check
+
+on: [pull_request]
+
+jobs:
+  typecheck:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+
+      - name: Run type checking with ty
+        run: uv run --all-extras ty check

.github/workflows/yamllint.yml

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+name: "Yamllint GitHub Actions"
+on:
+  - pull_request
+jobs:
+  yamllint:
+    name: "Yamllint"
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@master
+      - name: "Yamllint"
+        uses: karancode/yamllint-github-action@master
+        with:
+          yamllint_strict: true
+          yamllint_comment: true
+        env:
+          GITHUB_ACCESS_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.yamllint

@@ -0,0 +1,3 @@
+rules:
+    line-length:
+        max: 200