[BREAKING CHANGE] Change Atom to Atom<'a> to make it safe (#2497)

Part of #2295

This PR splits the `Atom` type into `Atom<'a>` and `CompactString`.

All the AST node strings now use `Atom<'a>` instead of `Atom` to signify
it belongs to the arena.

It is now up to the user to select which form of the string to use.

This PR essentially removes the really unsafe code 


https://github.com/oxc-project/oxc/blob/93742f89e91bc7c45491b6d2b49a134fa65f2b5c/crates/oxc_span/src/atom.rs#L98-L107

which can lead to 

![image](https://github.com/oxc-project/oxc/assets/1430279/8c513c4f-19b0-4b63-b61c-e07c187c95b5)