Add CI testing

.github/workflows/test.yaml

@@ -0,0 +1,47 @@
+name: "🧪 Test"
+
+on:
+  pull_request:
+  push:
+    branches:
+      - "main"
+      - "releases"
+
+jobs:
+  test:
+    name:
+      "${{
+        (startswith(matrix.runner, 'ubuntu') && 'Linux')
+        || (startswith(matrix.runner, 'macos') && 'macOS')
+        || (startswith(matrix.runner, 'windows') && 'Windows')
+      }}"
+
+    strategy:
+      matrix:
+        runner:
+          - "ubuntu-latest"
+          - "macos-latest"
+          - "windows-latest"
+        cpythons:
+          - - "3.8"
+            - "3.9"
+            - "3.10"
+            - "3.11"
+            - "3.12"
+        cpython-beta:
+          - "3.13"
+        pypys:
+          - - "3.8"
+            - "3.9"
+            - "3.10"
+        cache:
+          - key:
+              hash-files:
+                - "pyproject.toml"
+                - "requirements/*/*.txt"
+            paths:
+              - ".mypy_cache/"
+
+    uses: "kurtmckee/github-workflows/.github/workflows/tox.yaml@73024397dba10c866931a1d26cc2a0e7d223472f" # v0.2
+    with:
+      config: "${{ toJSON(matrix) }}"

changelog.d/20240605_222619_kurtmckee_add_ci.rst

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+Development
+-----------
+
+*   Add CI testing.