Migrate `replace derive with manual impl` and `add_missing_impl_members` to use `SyntaxEditor`#20293

ShoyuVanilla merged 3 commits intorust-lang:masterrust-lang/rust-analyzer:masterfrom

Hmikihiro:migrate_replace_derive_with_manual_implHmikihiro/rust-analyzer:migrate_replace_derive_with_manual_implCopy head branch name to clipboard