List fields of enum variants / structs on hover

[Centril]

Similar to #3169, it would be quite nice if on hovering e.g., an enum variant or struct as a pattern or expression (tuple or record doesn't matter), the fields of said variant / struct would be shown. Often I feel like I have to F12 to find out what the fields are otherwise.

[matklad]

FYI, you don't have to go to definition, you can peek at it:

(although I myself use goto and back)

[Centril]

FYI, you don't have to go to definition, you can peek at it:

I know, but I'm too lazy / forgetful to press ALT. 😜

[andreytkachenko]

Similar on ReScript:

[Veykril]

we now render struct fields given #15847