Feature or enhancement

Signature can be manually added for some builtin functions and classes that do not use Argument Clinic.

Linked PRs

• gh-111999: Add signatures and improve docstrings for builtins #112000
• gh-111999: Fix the signature of str.format_map() #119540
• [3.13] gh-111999: Fix the signature of str.format_map() (GH-119540) #119543