Add Github Actions workflow for lint checks

Signed-off-by: Nabarun Pal <[email protected]>

Author: palnabarun

.github/workflows/lint.yaml

@@ -0,0 +1,34 @@
+name: Lint
+on:
+  push:
+    branches-ignore:
+      - django-2.2
+  pull_request:
+    branches-ignore:
+      - django-2.2
+
+jobs:
+  lint:
+    runs-on: ubuntu-16.04
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Setup Python 3.8
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.8
+      - name: Cache pip
+        uses: actions/cache@v2
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements*.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+            ${{ runner.os }}-
+      - name: Install project dependencies
+        run: |
+          pip install --upgrade pip
+          pip install nox
+          pip install coveralls
+      - name: Check for linting issues
+        run: nox -s lint-3.8