Additional #derive's

[wolfv]

I've noticed that some structs are not deriving as many things as possible. It's pretty useful to have a derived implementation for Copy/Clone/Hash/Eq/PartialEq etc.

[dralley]

@wolfv Which structs?

[wolfv]

For example Requirement can't be hashed: https://github.com/dralley/rpmrepo_metadata/blob/dcb93bea30bffc4a2bfde1036cf31357a6b23f75/src/metadata.rs#L735C1-L736C1

And a bunch of others could also have some more Derives. You can see what we had to implement here: https://github.com/prefix-dev/resolvo-rpm/blob/a54df79ef863c7c940b69c7a645a3cab8e099be6/src/rpm_provider.rs#L20-L85

[dralley]

@wolfv Does this handle pretty much everything? d3e61d8

I didn't do a Display impl for Changelog or Requirement, but I believe that was only used for debugging?

[wolfv]

Looks very good! Thank you, I'll test it soon :)