Add pylint action

.github/workflows/pylint.yml

@@ -0,0 +1,34 @@
+name: Pylint
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.9"]
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v3
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pylint
+        pip install -r backend/requirements.txt
+        pip install -r backend/test-requirements.txt
+    - name: Analysing the code with pylint
+      env: 
+        KEYRING_DNS_SECRET: ${{ secrets.KEYRING_DNS_SECRET }}
+        PROXMOX_API_KEY_NAME: ${{ secrets.PROXMOX_API_KEY_NAME }}
+        PROXMOX_API_KEY: ${{ secrets.PROXMOX_API_KEY }}
+        PROXMOX_BACK_DB_DEV: ${{ secrets.PROXMOX_BACK_DB_DEV }}
+        ADH6_API_KEY: ${{ secrets.ADH6_API_KEY }}
+      run: |
+        cd backend/
+        export PYTHONPATH=$(pwd)
+        export ENVIRONMENT='TEST'
+        pytest --cov=proxmox_api --cov-report term-missing --cov-report xml:./coverage_out_report.xml --junitxml=report.xml --ignore=test/integration