GH-48251: [C++][CI] Add CSV fuzzing seed corpus generator #3255

Job	Run time
check-labels / Check labels	29s
JNI ${{ matrix.platform.runs-on }} ${{ matrix.platform.arch }}	0s
matrix.title	0s
ARM64 Windows 11 MSVC	0s
JNI macOS	0s
report-extra-cpp	-1s
	28s

Provide feedback