[clangd][vscode] Add npm helper commands to package/release the extension.

Summary: Help to fix https://github.com/clangd/clangd/issues/159.

Reviewers: ilya-biryukov

Subscribers: MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D68080

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@372980 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed