Add RPC for getting location capacity timeseries

[devsjc]

Verification

• I have searched the existing issues to ensure this feature has not already been requested.

Provide a detailed description of the proposed feature.

Currently, it is possible to fetch the capacity of a location at a given time via GetLocation with a pivot timestamp. However, it would be useful to be able to fetch the capacity history. As such, a new route is needed, potentially GetLocationAsTimeseries or GetLocationHistory which enables fetching a timeseries of capacity data for a given location.

What is the motivation for the feature?

Currently, the timeseries cannot be fetched.

Outline a potential approach or solution (optional).

No response