Updated PrimeNet program to support color output and README. #364

Job	Run time
CUDALucas (ubuntu-20.04)	3m 19s
GpuOwl (ubuntu-20.04, g++)	2m 23s
CUDALucas (ubuntu-22.04)	2m 19s
PrimeNet Linux (ubuntu-20.04)	7s
GpuOwl (ubuntu-20.04, clang++)	2m 22s
CUDALucas (ubuntu-24.04)	3m 16s
PrimeNet Linux (ubuntu-22.04)	5s
GpuOwl (ubuntu-22.04, g++)	2m 2s
PrimeNet Linux (ubuntu-24.04)	8s
PrimeNet macOS (macos-13)	12s
GpuOwl (ubuntu-22.04, clang++)	1m 43s
GpuOwl (ubuntu-24.04, g++)	2m 21s
Mlucas (ubuntu-20.04, gcc)	1h 10m 56s
PrimeNet macOS (macos-latest)	8s
GpuOwl (ubuntu-24.04, clang++)	1m 42s
Mlucas (ubuntu-20.04, clang)	1h 10m 30s
Pylint	16s
Mlucas (ubuntu-22.04, gcc)	1h 9m 55s
Mlucas (ubuntu-22.04, clang)	1h 10m 58s
Ruff	8s
PrimeNet Windows (windows-2019)	36s
Mlucas (ubuntu-24.04, gcc)	1h 11m 31s
PrimeNet Windows (windows-latest)	31s
Mlucas (ubuntu-24.04, clang)	1h 11m 18s
	7h 28m 46s

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