[FEAT] Thunder Usage stats API

[2ndtlmining]

Is your feature request related to a problem? Please describe.
Hey Team

Today the API: https://stats.runonflux.io/fluxinfo/ is very useful to get a snapshot view of nodes and locked resources. Noticed that there is not yet any metric attached onto this API for the thunder (persistent storage/Fluxdrive) data yet:

Wanted to know is there any other API that can be used to distinguish between SSD's being used for apps vs Thunder HDD storage for things like Persistent storage of Flux drive. The current HDD metric i assume is actually SSD not HDD but would think that will be a big change in the back-end.

Describe the solution you'd like
Just love to see either a added metric onto the stats.runonflux.io API that track the thunder actual usage. Suspect the stat.runonflux.io is ideal as the storage is actually added ontop of a node thus will be possible to tag who's storage is being used.
Not sure what the appropriate labelling could be.

Describe alternatives you've considered
Not sure if there is another API that i can use? I had a look in: flux/ZelBack/src/routes.js. But couldnt find anything that relates to it.

Additional context
Love to track the usage of the thunder storage as apposed to the current SSD storage that is used by various apps. Like to include it for visibility to the community in fluxnode.app.runonflux.io application.