Add Vite's base option support to viteBuild

[ShogunPanda]

Hi!
In order to integrate Remix in the @platformatic/remix package, we are currently using the viteBuild function from @remix-run/dev by importing in our code directly.

remix/packages/remix-dev/cli/commands.ts

Line 150 in 1fd422a

export async function viteBuild(

The problem is that it is currently lacking a way to propagate the Vite's base option that, for our use-case, cannot be present in the vite.config.js.

It would be great to pass base (and possibly other vite options) option to viteBuild and get it propagated up to vite.build.

Do you think this is a feature you would like to add? Alternatively, would be open to a PR that enables that?