Future plans for MXFP8 development

[avizon-aws]

I tried searching for the list of planned features as well as the timelines for the developments planned for MXFP8 training, I was unable to find it. It would be helpful if we can know about the planned features and the timelines, for e.g. I tried out the MXFP8 all gather, but it was not implemented for MXTensors at present, would be good to about when to expect it to be enabled.

[supriyar]

I believe #2147 has some details, but is likely not the full list

cc @danielvegamyhre @vkuzo