consider retrieving changesets info from OSM-hasthag-explorer

[ccamara]

So far, data about changesets is pulled by from querying OSM's API in two steps:

1. First, we pull all the changesets made by a list of users with get_contributors_changesets()
2. Then, for every changeset, we get all their details with get_changesets_details()

All of this is done in here: https://github.com/WarwickCIM/OSMdashboard/blob/main/inst/templates/dashboard_groups/data_retrieval.R (until issue #11 is implemented).

This process takes a lot of time and is resource hungry.
Ideally we could pull this data from https://github.com/WarwickCIM/OSM-hasthag-explorer (if that was a service).