Ruby

YJIT: Add --yjit-pause and RubyVM::YJIT.resume (#7609)

• YJIT: Add --yjit-pause and RubyVM::YJIT.resume

This allows booting YJIT in a suspended state. We chose to add a new
command line option as opposed to simply allowing YJIT.resume to work
without any command line option because it allows for combining with
YJIT tuning command line options. It also simpifies implementation.

Paired with Kokubun and Maxime.

• Update yjit.rb

Co-authored-by: Takashi Kokubun takashikkbn@gmail.com

Co-authored-by: Alan Wu XrXr@users.noreply.github.com
Co-authored-by: Takashi Kokubun takashikkbn@gmail.com