Describe the solution you'd like

We now have the possibilty to request the regions from nearby repeaters which is great. However, this is only possible one time for choosing the default region.

I would like to have that region/scope management improved by the following features:

1. For every region, reported by a repeater, you should be able to choose, if you want to save that region in a list, which is hold by MeshMonitor.
2. You should be able to manually add / delete items from that list
3. You should be able to choose an item from that list in the channel management, so that you can set a scope for a certain channel in channel settings (currently you need to write the scope manually)
4. You should be able to choose an item from that list in a channel, if you want to override the scope for a message (currently you also need to manually write the scope)

I guess the list of regions is already hold by MeshMonitor somewhere internally, as it is needed to find a schop/region match for a certain channel message? So it should be quite easy to maintan that list manually and choose from it whereever someone needs to choose a region/scope.