readline: support kitty keyboard protocol #4122

Job	Run time
Build slim tarball	2m 51s
x86_64-darwin: with shared libraries	34m 56s
x86_64-linux: with shared libraries	21m 36s
aarch64-linux: with shared libraries	17m 31s
aarch64-darwin: with shared libraries	17m 10s
	1h 34m 4s

Provide feedback