WIP: Rework devices from path

[elezar]

This PR is a response to https://github.com/containers/podman/pull/28008/changes#r2787912757

This changes how container.conf and host_device_list CDI devices
are handled. Instead of injecting these separately (requiring)
separate instatiations of a CDI cache, these are pre-processed to
extract the list of CDI device names. These CDI devices are then
added to the list of CDI devices names from explicit --device requests
and implicit requests from the --gpus flag.

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• Referenced issues using Fixes: #00000 in commit message (if applicable)
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Does this PR introduce a user-facing change?

None

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[elezar]

This still includes the commits from #28008. I will rebase and rework as soon as that's merged.