There is currently a function called add_resource_attribute which is called repeatedly by the server in its add_resource_attributes function.
This functioin works well for a single call, but when called multipole thousands of times in a loop exposes massive inefficiency (~5000 resource attributes take > 90 seconds to add).

We should have a dedicated add_resource_attributes function which:

1: Assumes that all the RAs are being added to the same network
2: Identifies this network (by looking at any one of the RAs, extracting the node/link/group/network ID, and querying for the network ID if necesssary)
3: Extracts all the RAs in the network
4: Checks for overlaps and removes duplicates from the incoming RAs
5: Performs a bulk insert of RAs, rather than individual inserts.