visual analyzer

[Triumph-light]

I have an idea to include a visual volume analysis tool as a configuration option and a built-in feature of tsdown, as tsdown typically packages libraries and requires volume analysis. At present, there is support for the rollup-plugin-visualizer, and I think it can be integrated into it.
If necessary, I want to try do it @sxzz

[sxzz]

@antfu is working on Vite Devtools now
https://bsky.app/profile/voidzero.dev/post/3lnsl7svqgk2c

[Triumph-light]

looking forward！！！