[lldb/API] Add CommandInterpreter::{Get,Set}PrintErrors to SBAPI (NFC)

This patch exposes the getter and setter methods for the command
interpreter `print_errors` run option.

rdar://74816984

Differential Revision: https://reviews.llvm.org/D98001



Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>