ocamlsdl 0.9.1 (new formula)
sdl_gfx: add 2.0.24 bottle.
sdl_image: add 1.2.12_1 bottle.
sdl_mixer: add 1.2.12 bottle.
sdl_ttf: add 2.0.11 bottle.
ocamlsdl: add 0.9.1 bottle.

Closes #31092.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>