OPEN-4147: Added linting and pytest to client repo

Author: Parthib

.github/workflows/code_validations.yml

@@ -0,0 +1,60 @@
+name: Code Validations
+
+on: [pull_request]
+
+jobs:
+  check-for-python-changes:
+    runs-on: ubuntu-latest
+    outputs:
+      run-python-validations: ${{ steps.changes.outputs.run-python-validations }}
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Get changed files
+        id: changes
+        run: |
+          echo "::set-output name=run-python-validations::$(git diff --name-only --diff-filter=ACMRT ${{ github.event.pull_request.base.sha }} ${{ github.sha }} | grep .py$ | xargs)"
+
+  run-checks:
+    runs-on: ubuntu-latest
+    needs: check-for-python-changes
+    if: ${{needs.check-for-python-changes.outputs.run-python-validations}}
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Python 3.8.12
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8.12
+
+      - uses: actions/cache@v3
+        id: cache
+        with:
+          path: ${{ env.pythonLocation }}
+          key: ${{ env.pythonLocation }}-${{ hashFiles('setup.cfg') }}--${{ hashFiles('tests/requirements.txt') }}
+
+      - name: Install dependencies
+        if: steps.cache.outputs.cache-hit != 'true'
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e .
+          pip install -r tests/requirements.txt
+
+      - name: Make sure black formatter results in no diff
+        run: |
+          black $(git ls-files '*.py') --check
+      - name: Make sure isort formatter results in no diff
+        run: |
+          isort $(git ls-files '*.py') --check
+      - name: Analyzing the code with pylint
+        run: |
+          pylint openlayer tests
+      - name: Analyzing the code with flake8
+        run: |
+          flake8 openlayer tests
+      # Currently always succeeds because unit tests need to be fixed
+      - name: Running Pytest
+        run: |
+          pytest