Exclude lightrag/api/webui from pre-commit hooks.

- Added .gitattributes for webui files（exclude it from git dfff)
- Excluded webui from trailing-whitespace hook
- Excluded webui from end-of-file-fixer
- Excluded webui from ruff-format hook
- Excluded webui from check-manifest hook

.gitattributes

@@ -0,0 +1 @@
+lightrag/api/webui/** -diff

.pre-commit-config.yaml

@@ -3,16 +3,21 @@ repos:
     rev: v5.0.0
     hooks:
       - id: trailing-whitespace
+        exclude: ^lightrag/api/webui/
       - id: end-of-file-fixer
+        exclude: ^lightrag/api/webui/
       - id: requirements-txt-fixer
+        exclude: ^lightrag/api/webui/
 
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
     rev: v0.6.4
     hooks:
       - id: ruff-format
+        exclude: ^lightrag/api/webui/
       - id: ruff
         args: [--fix, --ignore=E402]
+        exclude: ^lightrag/api/webui/
 
 
   - repo: https://github.com/mgedmin/check-manifest
@@ -20,3 +25,4 @@ repos:
     hooks:
       - id: check-manifest
         stages: [manual]
+        exclude: ^lightrag/api/webui/