chore: add GitHub Actions workflow for Python tests

- Configured automated testing on push and pull requests using pytest
- Set up uv for dependency management and Python 3.10 environment
- Added test results artifact upload for debugging failed runs

Author: msanatan

.github/workflows/python-tests.yml

@@ -0,0 +1,42 @@
+name: Python Tests
+
+on:
+    push:
+        branches: ["**"]
+    pull_request:
+    workflow_dispatch: {}
+
+jobs:
+    test:
+        name: Run Python Tests
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v4
+
+            - name: Install uv
+              uses: astral-sh/setup-uv@v4
+              with:
+                  version: "latest"
+
+            - name: Set up Python
+              run: uv python install 3.10
+
+            - name: Install dependencies
+              run: |
+                  cd MCPForUnity/UnityMcpServer~/src
+                  uv sync --dev
+
+            - name: Run tests
+              run: |
+                  cd MCPForUnity/UnityMcpServer~/src
+                  uv run pytest tests/ -v --tb=short
+
+            - name: Upload test results
+              uses: actions/upload-artifact@v4
+              if: always()
+              with:
+                  name: pytest-results
+                  path: |
+                      MCPForUnity/UnityMcpServer~/src/.pytest_cache/
+                      tests/