Auto merge of #108538 - matthiaskrgr:rollup-vw6h5ea, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - #104265 (Move IpAddr, SocketAddr and V4+V6 related types to `core`)
 - #107110 ([stdio][windows] Use MBTWC and WCTMB)
 - #108308 (Allow building serde and serde_derive in parallel)
 - #108363 (Move the unused extern crate check back to the resolver.)
 - #108519 (Bages for easy access links to Rust community)
 - #108522 (Commit some new solver tests)
 - #108523 (Avoid `&str` to `String` conversions)
 - #108533 (diagnostics: avoid querying `associated_item` in the resolver)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup