feat: 新增 .pre-commit-config.yaml 基础通用规则配置 - 新增 pre-commit 配置文件及 CONTRIBUTING.md - detect-private-key 排除 test/mock/ 下所有 .key 测试 fixture - CONTRIBUTING.md 修复 MD041/MD001/MD032 markdownlint 问题 Signed-off-by: m0_64526648 <masiyu7@huawei.com> Change-Id: Ieb7d3d94e0b1802a7082a45947053cf125285d96 | 