[style] Add pre-commit config

https://pre-commit.com/

.pre-commit-config.yaml

@@ -0,0 +1,31 @@
+---
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.0.1
+    hooks:
+      - id: check-yaml
+      - id: end-of-file-fixer
+      - id: trailing-whitespace
+  - repo: https://github.com/PyCQA/isort
+    rev: 5.9.3
+    hooks:
+      - id: isort
+  - repo: https://github.com/psf/black
+    rev: 21.9b0
+    hooks:
+      - id: black
+  - repo: https://github.com/adrienverge/yamllint
+    rev: v1.26.3
+    hooks:
+      - id: yamllint
+  - repo: https://github.com/myint/autoflake
+    rev: v1.4
+    hooks:
+      - id: autoflake
+        args:
+          - --in-place
+          - --recursive
+          - --expand-star-imports
+          - --remove-all-unused-imports
+          - --remove-duplicate-keys
+          - --remove-unused-variables

pyproject.toml

@@ -1,3 +1,32 @@
 [build-system]
 requires = ["setuptools", "wheel"]
 build-backend = "setuptools.build_meta"
+
+[tool.black]
+line-length = 79
+target-version = ["py38"]
+
+[tool.isort]
+line_length = 79
+profile = "black"
+multi_line_output = 3
+
+[tool.mypy]
+check_untyped_defs = true
+disallow_any_generics = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+no_implicit_optional = true
+no_implicit_reexport = true
+show_error_context = true
+warn_redundant_casts = true
+warn_return_any = true
+warn_unused_configs = true
+warn_unused_ignores = true
+exclude = []
+
+[tool.pylint."MESSAGES CONTROL"]
+disable = []