Add pre-comit

.flake8

+[flake8]
+max-line-length = 80
+ignore = E501,W503,E302,E402,E203

.pre-commit-config.yaml

+# See https://pre-commit.com for more information
+# See https://pre-commit.com/hooks.html for more hooks
+repos:
+  - repo: https://github.com/timothycrosley/isort
+    rev: 5.10.1
+    hooks:
+      - id: isort
+        args: [--settings-path, "pyproject.toml"]
+  - repo: https://github.com/psf/black
+    rev: 22.3.0
+    hooks:
+      - id: black
+  - repo: https://gitlab.com/pycqa/flake8
+    rev: 3.9.2
+    hooks:
+      - id: flake8
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.2.0
+    hooks:
+      - id: check-ast
+      - id: check-case-conflict
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: debug-statements
+      - id: check-added-large-files
+      - id: check-yaml
+        exclude: .*/meta.yaml

pyproject.toml

 [build-system]
-requires = ["setuptools", "wheel", "bob.extension"]
-build-backend = "setuptools.build_meta"
+    requires = ["setuptools", "wheel", "bob.extension"]
+    build-backend = "setuptools.build_meta"
+
+[tool.isort]
+    profile = "black"
+    line_length = 80
+    order_by_type = true
+    lines_between_types = 1
+
+[tool.black]
+    line-length = 80