feat: add github action

.github/workflows/version_supports.yaml

@@ -0,0 +1,40 @@
+name: version supports
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v2
+
+    - name: Install poetry
+      run: |
+        python -m pip install poetry
+        poetry export --with dev --format=requirements.txt --output=requirements.txt
+    - name: set PY
+      run: echo "PY=$(python -c 'import hashlib, sys;print(hashlib.sha256(sys.version.encode()+sys.executable.encode()).hexdigest())')" >> $GITHUB_ENV
+    - uses: actions/cache@v1
+      with:
+        path: ~/.cache/pre-commit
+        key: pre-commit|${{ env.PY }}|${{ hashFiles('.pre-commit-config.yaml') }}
+    - uses: pre-commit/[email protected]
+
+  check_python38:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+    - name: Set up Python 3.8
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.8'
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+    - name: Install poetry
+      run: |
+        python -m pip install poetry
+        poetry export --with dev --format=requirements.txt --output=requirements.txt