Update connectivity edge cases to use viewport.project

[invisibleroads]

@zoek1

The video that you posted in #204 gave me a clue to look for ways to project map coordinates to xy coordinates.

Searching through the deck.gl repository, I found references to viewport.project.

I was able to convert map coordinates to xy coordinates using viewport.project as contained in the deckGL ref.
https://github.com/AmericanPublicPowerAssociation/asset-tracker-client/blob/develop/src/hooks/map.js#L74

Would it be possible for you to rewrite your recent connectivity edge cases directly into handleAssetEdit, using viewport.project?