[clang-tools-extra] [clangd] Introduce --skip-preamble-build command line option (PR #189284)

[Chuanqi Xu via cfe-commits]

https://github.com/ChuanqiXu9 approved this pull request.

LGTM. Let's land it. Thank you very much.

https://github.com/llvm/llvm-project/pull/189284