feat: add checks for Py samples (#5339)

.github/workflows/py_checks.yml

@@ -0,0 +1,33 @@
+name: IE Python Checks
+# TODO: add for IE API, wheels
+on:
+  workflow_dispatch:
+  push:
+    paths:
+      - 'inference-engine/ie_bridges/python/sample/**'
+  pull_request:
+    paths:
+      - 'inference-engine/ie_bridges/python/sample/**'
+jobs:
+  linters:
+    runs-on: ubuntu-18.04
+    steps:
+      - name: Code checkout
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.6'
+      - name: Install dependencies
+        run: python -m pip install -r inference-engine/ie_bridges/python/sample/requirements_dev.txt
+      - name: Run Flake
+        run: python -m flake8 ./ --config=setup.cfg --show-source 
+        working-directory: inference-engine/ie_bridges/python/sample
+      - name: Run MyPy 
+        run: python -m mypy ./ --config-file ./setup.cfg --show-error-context --show-column-numbers --pretty
+        working-directory: inference-engine/ie_bridges/python/sample      
+      - name: Run Bandit
+        run: python -m bandit -r ./ -f screen
+        working-directory: inference-engine/ie_bridges/python/sample