Deprecate fg, bg, bg_blend keywords in Console methods #969

Job	Run time
ruff	7s
mypy	25s
sdist	45s
tox (ubuntu-latest)	1m 42s
tox (windows-latest)	2m 29s
test-docs	1m 36s
parse_sdl (windows-latest, 2.30.0)	1m 5s
parse_sdl (macos-latest, 2.0.14)	23s
parse_sdl (macos-latest, 2.0.16)	20s
parse_sdl (windows-latest, 2.0.16)	52s
build-macos (pp38-*)	3m 53s
linux-wheels (x86_64, cp38-manylinux*)	1m 51s
parse_sdl (macos-latest, 2.30.0)	21s
build-macos (cp38-*_universal2)	4m 55s
linux-wheels (x86_64, pp38-manylinux*)	1m 59s
linux-wheels (aarch64, pp38-manylinux*)	11m 35s
build (windows-latest, pypy-3.8, x86)	4m 53s
build (ubuntu-latest, 3.8, x64)	3m 1s
build (windows-latest, 3.8, x64)	3m 54s
build (ubuntu-latest, pypy-3.8, x64)	2m 56s
build (windows-latest, pypy-3.8, x64)	4m 53s
linux-wheels (aarch64, cp38-manylinux*)	12m 22s
build (windows-latest, 3.8, x86)	4m 4s
parse_sdl (windows-latest, 2.0.14)	41s
publish	0s
	1h 11m 2s

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