chore: import upstream snapshot with attribution

.pre-commit-config.yaml

@@ -0,0 +1,57 @@
+exclude: ^scripts|docs|docker|requirements|README.md|test|experimental
+repos:
+  - repo: https://github.com/PyCQA/flake8.git
+    rev: 3.8.3
+    hooks:
+      - id: flake8
+        args: ["--max-line-length=120"]
+  - repo: https://github.com/asottile/seed-isort-config
+    rev: v2.2.0
+    hooks:
+      - id: seed-isort-config
+  - repo: https://github.com/timothycrosley/isort
+    rev: 4.3.21
+    hooks:
+      - id: isort
+        files: \.(py|pyd)$
+        args: ["-l 100"]
+  - repo: https://github.com/pre-commit/mirrors-yapf
+    rev: v0.32.0
+    hooks:
+      - id: yapf
+        files: \.(py|pyd)$
+        args: ["--style={column_limit: 120}"]
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v3.1.0
+    hooks:
+      - id: trailing-whitespace
+        files: \.(py|pyd)$
+      - id: check-yaml
+      - id: end-of-file-fixer
+        files: \.(py|pyd)$
+      - id: requirements-txt-fixer
+      - id: double-quote-string-fixer
+      - id: check-merge-conflict
+      - id: fix-encoding-pragma
+        args: ["--remove"]
+      - id: mixed-line-ending
+        args: ["--fix=lf"]
+        files: \.(py|pyd)$
+  # - repo: https://github.com/jumanjihouse/pre-commit-hooks
+  #   rev: 2.1.4
+  #   hooks:
+  #     - id: markdownlint
+  #       args: ["-r", "~MD002,~MD013,~MD029,~MD033,~MD034,~MD005"]
+  # - repo: https://github.com/myint/docformatter
+  #   rev: v1.3.1
+  #   hooks:
+  #     - id: docformatter
+  #       args: ["--in-place", "--wrap-descriptions", "79"]
+  - repo: local
+    hooks:
+      - id: clang-format
+        name: clang-format
+        description: Format files with ClangFormat
+        entry: clang-format -i
+        language: system
+        files: \.(c|cc|cxx|cpp|cu|h|hpp|hxx|cuh|proto)$