UI support for Host Volumes

[DingoEatingFuzz]

Background

Host volumes are client-local volumes that can optionally mounted by Nomad as specified in the client config. Jobs can then be specified to require host volumes, forcing the scheduler to place the allocations for said job on clients with matching host volumes.

See how this looks in the CLI here: #6011
And how it looks in client and job specs here: #5923

UI Requirements

1. Show host volumes for a client on the Client Detail page, including the same information that is shown in the CLI.
2. Explore adding host volumes to faceted search on the Client List page.
3. Show host volume requirements on the Task Group page.
4. Show host volume usage on the Allocation and Task Detail pages.

Implementation notes

We know that Container Storage Interface support is coming, so we should be mindful of this when designing changes to especially the task group/allocation/task pages.

Host volumes is distinct from CSI, but they both relate to storage so there is bound to be some user flow overlap.

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