allow to use with typescript(ttypescript) as a compiler

[capaj]

I am having a usecase where I want to run vite using ttypescript. even SWC does not support the stuff I want to do with decorators. You can see it for example in this repo: https://github.com/capaj/startup-stage-checklist-api/tree/vitest-spec-config-wip

so it would be nice if we could specify typescript as a compiler as well, not just esbuild/swc.