Add dependencies installation

.github/workflows/pylint.yml

@@ -18,6 +18,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install pylint
+        pip install .
     - name: Analysing the code with pylint
       run: |
         pylint $(git ls-files '*.py') --disable missing-function-docstring,missing-module-docstring,missing-class-docstring,broad-exception-caught