Support GPU resource request

[caiconkhicon]

Currently, Escalator calculates resource utilisations based on both CPU and RAM. IMO, it's better to let users have multiple choices between:

• CPU
• RAM
• GPU

[Jacobious52]

Hi @caiconkhicon

Thanks for this issue. Support for multiple resource utilisations is definitely on our radar. We are open to any PRs related to this.

@mcrute May be working on GPU support PR if I recall correctly?

[mcrute]

I have a working patch for GPU support and will get it cleaned up for PR early next week. It doesn't yet go so far as to generalize the resource utilization model but I hope to build in that direction in the near future.