Sort bundle-size summary lists

[alanorozco]

Sort file lists in bundle-size summaries so that they're quicker to read.

1. Groups by filename without extension, so the equivalent .mjs file is always next to .js
2. Sorts by delta, either asc or desc depending on pre-approval.

[danielrozenberg]

Nit: I doubt we'll ever really need both options, we can simplify the code by just assuming desc

[danielrozenberg]

This is basically "the opposite of path.extname", so how about use it in the definition of this function and make it a oneliner:

Suggested change

	const noExtension = file => {
	const parts = file.split('.');
	parts.pop();
	return parts.join('.');
	};
	const noExtension = file => file.slice(0, -path.extname(file).length);

(Add const path = require('path'); at the top, ofc)

Tested this locally to make sure it works, e.g.:

> fn = 'a/b/adasds.max.js';
'a/b/adasds.max.js'
> const noExtension = file => file.slice(0, -path.extname(file).length);
undefined
> noExtension(fn);
'a/b/adasds.max'

[danielrozenberg]

Eh, I think it's fine to sort both cases as desc - it creates a consistent reading experience 🤷‍♂️