High CPU Usage in Editor (and Controls for LSP)

> I am working on low-end laptop and this "cpu spikes" are freezing my pc on large codebases :( To fix that for now I wrapped lsp cmd into cpulimit like so: `cpulimit -l 400 -- tsgo --lsp --stdio` and it works, but it would be nice to have some build-in flag for this kind of stuff like we have `--checkers` for the compiler. Especially since GOMAXPROCS=4 didn't work for me and I had to use third-party program (maybe that is because tsgo in my case was installed via npm and actually launched via node?)

_Originally posted by @glav-git in [#4347](https://github.com/microsoft/typescript-go/issues/4347#issuecomment-5185662214)_

The affected entry point is tsgo --lsp --stdio; the issue also mentions --checkers and GOMAXPROCS as comparison points. Start by reproducing CPU spikes on a large codebase with that command, then determine the intended built-in control. Done means users can limit LSP CPU usage without wrapping tsgo in cpulimit.

Written by the indexing model from the issue text.