Add Intel Granite Rapids support

[RonRahaman]

This adds support for Intel Granite Rapids. The changes are:

• Description of the Granite Rapids to microsarchitectures.json
• Addition of test output from my site's /proc/cpuinfo on our RHEL9 Granite Rapids machine.

Fixes #137

[alalazo]

Apologies for the delay. I think there may be a few features missing:

>>> import archspec.cpu
>>> archspec.cpu.TARGETS["graniterapids"]
Microarchitecture('graniterapids')
>>> g = archspec.cpu.TARGETS["graniterapids"].features
>>> s = archspec.cpu.TARGETS["sapphirerapids"].features
>>> g - s
{'xsave', 'fsgsbase', 'enqcmd', 'wbnoinvd', 'pku', 'avx_vnni', 'tsxldtrk', 'xsaves', 'avx512_fp16', 'cx16', 'fxsr', 'pconfig'}
>>> s - g
{'adx', 'xsaveopt', 'sha_ni', 'vpclmulqdq', 'vaes', 'pclmulqdq'}

Also, one of our test for sapphirelake is detected as granitelake. I wonder if we have a wrong test 🤔