Migrate to python (#265)

* Add initial python migration

* Add pylint

* Add pre-commit

* Add Dockerfile

* Add expression matching

* Use shelve to store previous matches

* Add notifications

* Calculate post age

* Update README.md

.github/workflows/pylint.yml

@@ -0,0 +1,22 @@
+name: Pylint
+
+on: [push, pull_request]
+
+env:
+  PYTHON_VERSION: "3.11"
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+      - name: Install dependencies
+        run: |
+          pip install poetry==1.3.2
+          poetry install
+
+      - name: Lint
+        run: poetry run pylint ./rfd_notify