Import fuzz_font from fuzz directory

[radarhere]

Alternative to #9185

Rather than duplicating

Pillow/Tests/oss-fuzz/fuzzers.py

Lines 38 to 43 in 208e9b5

	font.getbbox("ABC")
	font.getmask("test text")
	with Image.new(mode="RGBA", size=(200, 200)) as im:
	draw = ImageDraw.Draw(im)
	draw.multiline_textbbox((10, 10), "ABC\nAaaa", font, stroke_width=2)
	draw.text((10, 10), "Test Text", font=font, fill="#000")

at

Pillow/Tests/test_font_crash.py

Lines 12 to 14 in 208e9b5

	# from fuzzers.fuzz_font
	font.getbbox("ABC")
	font.getmask("test text")

this suggests just importing it.

The downside is that this requires renaming Tests/oss-fuzz to Tests/oss_fuzz, and this would temporarily break fuzzing until a PR is created and merged at https://github.com/google/oss-fuzz