Ftp and Websocket connection strings support

[CherrySuryp]

• The pull request title is a good summary of the changes - it will be used in the changelog
• Unit tests for the changes exist
• Tests pass on CI
• Documentation reflects the changes where applicable
• My PR is ready to review

Hi everyone! I often use WS and FTP strings, so I thought it would be handy to add their validation to Pydantic. I think it should be useful for use when validating configurations in Pydantic Settings and for type annotations

[CherrySuryp]

please review

[codspeed-hq]

CodSpeed Performance Report

Merging #9205 will not alter performance

_{Comparing CherrySuryp:ftp-and-websocket-support (3d46c0f) with main (a7d3253)}

Summary

✅ 13 untouched benchmarks

[CherrySuryp]

Hello there! That's my first contribution to pydantic :)
As I understood from Release Instructions - relnotes have to be manually added by maintainers. That's why one of the CI checks didn't pass. Correct me if I'm wrong, thanks!

[sydney-runkle]

Looks good! I think we might move these to pydantic-extra-types in V3, but I think it's fine to add them here for now.

[CherrySuryp]

Yeah, I think it fits networking.py module well for now