pre-commit: add autoflake and isort, include autoformatter config

.pre-commit-config.yaml

@@ -20,6 +20,21 @@ repos:
         # exclude it from the pyupgrade hook that will apply f-strings etc.
         exclude: bootstrap/bootstrap.py
 
+  # Autoformat: Python code
+  - repo: https://github.com/PyCQA/autoflake
+    rev: v2.1.1
+    hooks:
+      - id: autoflake
+        # args ref: https://github.com/PyCQA/autoflake#advanced-usage
+        args:
+          - --in-place
+
+  # Autoformat: Python code
+  - repo: https://github.com/pycqa/isort
+    rev: 5.12.0
+    hooks:
+      - id: isort
+
   # Autoformat: Python code
   - repo: https://github.com/psf/black
     rev: 23.3.0