Use github actions instead of azure pipelines (#206)

* Use github actions instead of azure pipelines

* add codecov badge

.github/workflows/ci.yml

@@ -0,0 +1,84 @@
+name: CI
+
+on:
+  push:
+    branches: ["master"]
+  pull_request:
+    branches: ["master"]
+  workflow_dispatch:  # to allow manual re-runs
+
+
+jobs:
+  linting:
+    name: "Perform linting checks"
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        python-version: ["3.9"]
+
+    steps:
+      - uses: "actions/checkout@v2"
+      - uses: "actions/setup-python@v2"
+        with:
+          python-version: "${{ matrix.python-version }}"
+      - name: "Install dependencies"
+        run: |
+          python -m pip install --upgrade pip poetry
+      - name: "Code formating (black)"
+        run: |
+          poetry run pre-commit run black --all-files
+      - name: "Code formating (flake8)"
+        run: |
+          poetry run pre-commit run flake8 --all-files
+      - name: "Order of imports (isort)"
+        run: |
+          poetry run pre-commit run isort --all-files
+      - name: "Typing checks (mypy)"
+        run: |
+          poetry run pre-commit run mypy --all-files
+      - name: "Run trailing-whitespace"
+        run: |
+          poetry run pre-commit run trailing-whitespace --all-files
+      - name: "Run end-of-file-fixer"
+        run: |
+          poetry run pre-commit run end-of-file-fixer --all-files
+      - name: "Run check-docstring-first"
+        run: |
+          poetry run pre-commit run check-docstring-first --all-files
+      - name: "Run debug-statements"
+        run: |
+          poetry run pre-commit run debug-statements --all-files
+      - name: "Run check-ast"
+        run: |
+          poetry run pre-commit run check-ast --all-files
+      - name: "Potential security issues (bandit)"
+        run: |
+          poetry run pre-commit run bandit --all-files
+
+
+  tests:
+    name: "Python ${{ matrix.python-version}} on ${{ matrix.os }}"
+    needs: linting
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        python-version: ["3.6", "3.7", "3.8", "3.9", "pypy3"]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+
+    steps:
+      - uses: "actions/checkout@v2"
+      - uses: "actions/setup-python@v2"
+        with:
+          python-version: "${{ matrix.python-version }}"
+      - name: "Install dependencies"
+        run: |
+          python -m pip install --upgrade pip poetry
+      - name: "Run tests"
+        run: |
+          poetry run pytest --cov kasa --cov-report xml
+      - name: "Upload coverage to Codecov"
+        uses: "codecov/codecov-action@v1"
+        with:
+          fail_ci_if_error: true