Available accelerators should be a "quantity" not an "int" in configuration

[landerlini]

While I understand having thousands of GPUs isn't customary, for symmetry with the number of pods and other resources the number of accelerators should be a Kubernetes quantity, not a an integer. This would also open to using it for accelerator memory and similar resources.

https://github.com/interlink-hq/interLink/blob/75253b484a35e3fc6d9baf0b543e0890c16e8a0e/pkg/virtualkubelet/config.go#L104C2-L104C34