OH Precommit Codecheck

Run local code quality checks. Includes gate CI checks and additional local-only checks.

Gate CI checks (same as OpenHarmony gate):

• Copyright: Header presence, year correctness, comment style (/** for C/C++)
• C/C++ format: clang-format (clang-format-14 preferred, fallback to clang-format)
• C/C++ quality: CodeArts Check (codecheck-ide-engine + Huawei clang-tidy: clangtidy + secfinder + fixbot)

Additional local checks (NOT part of gate CI, for extra quality):

• Python: pylint + flake8
• Shell: shellcheck + bashate-mod-ds
• GN: gn format --dry-run

Notes