Add "type: module" for all packages and changing main -> module

[weaverryan]

Q	A
Bug fix?	no
New feature?	yes
Tickets	None
License	MIT

Follow up on https://github.com/symfony/ux/pull/1202/files#r1367791334

We already use ESM inside of our packages. This makes that official with type: module. Some notes / questions:

A) I believe, since we already ONLY made "modules" available, that this will have no effect on end users, but I'm not 100% sure about that. If someone is using require instead of import, it would affect them... but in that case, I believe require would not have worked before anyway. But if anyone knows better than I do, I'd appreciate your notes.

B) Because we are a type: module, my impression is that main will not be used. And we can instead rely on module.

tl;dr I believe these changes won't have user-facing effects, but I'm not 100% sure about that... though I'm pretty sure that if they DO have user-facing effects, it would be limited to people who are currently using require with these packages.

Cheers!