TypeScript plugin: add option to expose a build command

[paularmstrong]

For teams that are all-in on TypeScript, it would be great to be able to provide a build command that runs the TypeScript plugin without --noEmit forced on.

export default {
  plugins: [
    typescript({
      build: true, // OR string Workspace-relative path to `tsconfig`
    }),
  ],
} satisfies Config;