info on the georeference plugin https://docs.unrealengine.com/4.27/en-US/BuildingWorlds/Georeferencing/
you don’t need to write a plugin to make use of it but you do need your own mechanism for receiving external data to engine, i am using socket.io plugin and nodejs to stream the data to engine from a backend server over ssl .
none of this requires you to make a plugin to achieve this.
as for my plugin i am not sure it will be releasable, as i am pretty much creating a backend view for personal use but a tutorial is hoped for.
how are you getting your geo coords into engine?
p.s if you are new to plugin / c++ i would avoid this path unless you need to (very steep learning curve)