Toshaan Bharvani e3454808c3 refactor group page
* process group images
* better layout
* hero promo adjustment

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>
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_index.md refactor group page
accelerator.md
compliance.md add intro text compliance twg
hardwarearchitecture.md
hpc.md
isa.md
librebmc.md
machinelearning.md
memory.md
powerpi.md
systemsoftware.md