Update CI with new directory structure and test command

Author: samwelkanda

.github/workflows/ci.yml

@@ -35,9 +35,7 @@ jobs:
           pipenv run isort .
       - name: Lint with Pylint
         run: |
-          pipenv run pylint msgraphcore --disable=W --rcfile=.pylintrc
-      - name: Test with unittest
+          pipenv run pylint msgraph --disable=W --rcfile=.pylintrc
+      - name: Test with pytest
         run: |
-          pipenv run coverage run -m pytest tests/unit
-          pipenv run coverage run -m pytest tests/integration
-          pipenv run coverage html
+          pipenv run pytest