Hello, Would it be possible to expose the [`tsconfig` option](https://github.com/egoist/tsup/blob/33a7c5f94e734b10c6fc9cf444edb8685dabdf58/src/options.ts#L151) to the CLI? It's useful when we have multiple tsconfig files (one for the build, one the VSCode...etc). I'm happy to make a PR if you're interested!