Add pre-commit and flake8 configs

Signed-off-by: Eoin Fennessy <[email protected]>

Author: eoinfennessy

.flake8

@@ -0,0 +1,3 @@
+[flake8]
+max-line-length = 100
+extend-ignore = W503

.pre-commit-config.yaml

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+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v5.0.0
+    hooks:
+      - id: check-yaml
+        args: [--allow-multiple-documents]
+      - id: end-of-file-fixer
+      - id: trailing-whitespace
+  - repo: https://github.com/pycqa/isort
+    rev: 6.0.1
+    hooks:
+      - id: isort
+        name: isort
+        entry: isort --profile black
+  - repo: https://github.com/psf/black
+    rev: 25.1.0
+    hooks:
+      - id: black
+  - repo: https://github.com/pycqa/flake8
+    rev: 7.2.0
+    hooks:
+      - id: flake8
+exclude: |
+  (?x)^(
+    kubeflow/trainer/__init__.py|
+    kubeflow/trainer/api/__init__.py|
+    kubeflow/trainer/models/.*|
+  )$