Add Reader and Writer protocols #1976

Job	Run time
Run tests (3.9)	10s
Lint	5s
Run tests (3.9.12)	11s
Run tests (3.10)	5s
Run tests (3.10.4)	16s
Run tests (3.11)	6s
Run tests (3.11.0)	14s
Run tests (3.12)	8s
Run tests (3.12.0)	17s
Run tests (3.13)	9s
Run tests (3.13.0)	13s
Run tests (pypy3.9)	9s
Run tests (pypy3.10)	11s
Create an issue if daily tests failed	0s
	2m 14s

Provide feedback