[Lint]Add lint hooks for clang-format, shellcheck, forbidden imports, and boolean context manager checks (#7511)

### What this PR does / why we need it?
This PR introduces several upstream `vllm`-aligned lint hooks into
`vllm-ascend` and makes them part of the actual `pre-commit` flow.

Main changes in this PR:
- add `check-boolean-context-manager` to catch boolean expressions in
`with` statements
- add `check-forbidden-imports` to forbid direct `re` imports and
disallowed direct `triton` imports
- enable shell script linting through `tools/shellcheck.sh`
- add root `.clang-format` aligned with upstream `vllm`, enable
`clang-format` in `pre-commit`, temporarily **exclude all `csrc/**`**
from `clang-format` to avoid bringing a large native code reformat into
this PR

This PR focuses on landing the smaller and immediately useful lint
alignment first, without mixing in the larger requirements-management
migration.

### Does this PR introduce _any_ user-facing change?
No.

This PR only updates repository lint configuration, static checks, and
internal import/style enforcement. It does not change runtime behavior
or public interfaces.

### How was this patch tested?
Tested locally in the project virtual environment.

Commands used:
```bash
bash format.sh
```
Verified checks passed:
``` bash
ruff check...............................................................Passed
ruff format..............................................................Passed
codespell................................................................Passed
typos....................................................................Passed
clang-format.............................................................Passed
Lint GitHub Actions workflow files.......................................Passed
Lint shell scripts.......................................................Passed
Lint PNG exports from excalidraw.........................................Passed
Check for spaces in all filenames........................................Passed
Enforce __init__.py in Python packages...................................Passed
Check for forbidden imports..............................................Passed
Check for boolean ops in with-statements.................................Passed
Suggestion...............................................................Passed
- hook id: suggestion
- duration: 0s

To bypass pre-commit hooks, add --no-verify to git commit.
```
**note:**
clang-format is enabled but currently excludes all csrc/**


- vLLM version: v0.17.0
- vLLM main:
8b6325758c

---------

Signed-off-by: MrZ20 <2609716663@qq.com>

.pre-commit-config.yaml

@@ -5,6 +5,7 @@ default_install_hook_types:
 default_stages:
   - pre-commit # Run locally
   - manual # Run in CI
+exclude: '^(\.agents|\.claude|\.gemini)/.*'
 
 repos:
 - repo: https://github.com/astral-sh/ruff-pre-commit
@@ -35,13 +36,13 @@ repos:
       "--exclude", "csrc/**"
     ]
 
-# - repo: https://github.com/pre-commit/mirrors-clang-format
-#   rev: v20.1.3
-#   hooks:
-#   - id: clang-format
-#     files: ^csrc/.*\.(cpp|hpp|cc|hh|cxx|hxx)$
-#     types_or: [c++]
-#     args: [--style=google, --verbose]
+- repo: https://github.com/pre-commit/mirrors-clang-format
+  rev: v21.1.2
+  hooks:
+  - id: clang-format
+    exclude: ^csrc/.*
+    types_or: [c++]
+    args: [--style=file, --verbose]
 
 - repo: https://github.com/igorshubovych/markdownlint-cli
   rev: v0.45.0
@@ -59,6 +60,11 @@ repos:
 
 - repo: local
   hooks:
+  - id: shellcheck
+    name: Lint shell scripts
+    entry: tools/shellcheck.sh
+    language: script
+    types: [shell]
   - id: png-lint
     name: Lint PNG exports from excalidraw
     entry: tools/png-lint.sh
@@ -97,6 +103,17 @@ repos:
     language: script
     types: [python]
     pass_filenames: false
+  - id: check-forbidden-imports
+    name: Check for forbidden imports
+    entry: python tools/check_forbidden_imports.py
+    language: python
+    types: [python]
+    additional_dependencies: [regex]
+  - id: check-boolean-context-manager
+    name: Check for boolean ops in with-statements
+    entry: python tools/check_boolean_context_manager.py
+    language: python
+    types: [python]
   # Keep `suggestion` last
   - id: suggestion
     name: Suggestion