use pre-commit instead of gh workflow

Signed-off-by: Anupam Kumar <[email protected]>

.pre-commit-config.yaml

@@ -0,0 +1,28 @@
+ci:
+  skip: [pyright]
+
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.5.0
+    hooks:
+      - id: check-yaml
+      - id: check-toml
+      - id: mixed-line-ending
+      - id: trailing-whitespace
+        files: context_chat_backend/|main\.py
+      - id: end-of-file-fixer
+        exclude: persistent_storage
+
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.2.2
+    hooks:
+      - id: ruff
+
+  - repo: local
+    hooks:
+      - id: pyright
+        name: pyright
+        entry: pyright
+        language: system
+        types: [python]
+        pass_filenames: false