[2.8]Add vGpus field in Harvester clusters provision

[torchiaf]

Summary

Fixes #10593

Occurred changes and/or fixed issues

We are adding the possibility to select a list of vGpus to assign to Harvester clusters. The list of available vGpus needs to be enabled in Harvester first.

Technical notes summary

It will also fix a bug in ArrayListSelect component when emitting new input event.

Areas or cases that should be tested

harvester.vue component

Areas which could experience regressions

Screenshot/Video

Checklist

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