gh-126349: Add 'fill', 'poly', and 'no_animation' context managers to turtle (#126350)

Co-authored-by: Marie Roald <roald.marie@gmail.com>
Co-authored-by: Yngve Mardal Moe <yngve.m.moe@gmail.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Daniel Hollas <danekhollas@gmail.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Erlend E. Aasland <erlend@python.org>