feat: Complete PyPI Query MCP Server Implementation (#3)

Merge pull request implementing complete PyPI query MCP server with comprehensive features and CI/CD pipeline.

.github/workflows/test.yml

@@ -0,0 +1,104 @@
+name: Tests
+
+on:
+  push:
+    branches: [ main, develop ]
+  pull_request:
+    branches: [ main, develop ]
+
+jobs:
+  test:
+    strategy:
+      max-parallel: 6
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python-version: ["3.10", "3.11", "3.12"]
+      fail-fast: false
+    
+    runs-on: ${{ matrix.os }}
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+        cache: 'pip'
+        cache-dependency-path: '**/pyproject.toml'
+    
+    # Cache Poetry dependencies
+    - name: Cache Poetry dependencies
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/pypoetry
+        key: ${{ runner.os }}-poetry-${{ matrix.python-version }}-${{ hashFiles('**/poetry.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-poetry-${{ matrix.python-version }}-
+    
+    # Cache nox environments
+    - name: Cache nox environments
+      uses: actions/cache@v4
+      with:
+        path: .nox
+        key: ${{ runner.os }}-nox-${{ matrix.python-version }}-${{ hashFiles('**/noxfile.py') }}
+        restore-keys: |
+          ${{ runner.os }}-nox-${{ matrix.python-version }}-
+    
+    - name: Install uv
+      run: |
+        python -m pip install --upgrade pip
+        pip install uv
+        uv --version
+    
+    - name: Install dependencies
+      run: |
+        uvx poetry install
+    
+    - name: Lint with ruff
+      run: |
+        uvx nox -s lint
+    
+    - name: Type check with mypy
+      run: |
+        uvx nox -s mypy
+    
+    - name: Run tests
+      run: |
+        uvx nox -s pytest
+    
+    - name: Upload coverage to Codecov
+      if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.11'
+      uses: codecov/codecov-action@v4
+      with:
+        file: ./coverage.xml
+        flags: unittests
+        name: codecov-umbrella
+        fail_ci_if_error: false
+
+  security:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+    
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: "3.11"
+    
+    - name: Install uv
+      run: |
+        python -m pip install --upgrade pip
+        pip install uv
+    
+    - name: Install dependencies
+      run: |
+        uvx poetry install
+    
+    - name: Run security checks
+      run: |
+        uvx nox -s safety