👷 add github actions

Author: KosukeSuzuki3

.github/workflows/check_pr.yml

@@ -0,0 +1,44 @@
+name: Check the source code
+on:
+  pull_request:
+    branches:
+      - main
+jobs:
+  Format:
+    name: Format
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.10"
+      - run: pip install pipenv
+      - run: pipenv install --dev --skip-lock
+      - run: pipenv run black --check src/ && pipenv run isort --check src/
+      - run: pipenv run black --check test/ && pipenv run isort --check test/
+  Lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.10"
+      - run: pip install pipenv
+      - run: pipenv install --dev --skip-lock
+      - run: pipenv run flake8 src/ && pipenv run mypy src/
+      - run: pipenv run flake8 test/ && pipenv run mypy test/
+  Test:
+    name: Test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.8", "3.9", "3.10"]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - run: pip install pipenv
+      - run: pipenv install --dev --skip-lock
+      - run: pipenv run pytest --cov=src test/