Feature request: Standalone installer for SNT

[tferr]

Folks using SNT via pyimagej would benefit from having standalone (1 click) installer for SNT. We could try to establish one using conda constructor.

It seems other folks are already pursuing this for other Fiji components here:
https://forum.image.sc/t/pyimagej-conda-constructor-specify-the-folder-containing-jars-for-a-fast-first-start-up/77784

@maryLLay could potentially look into it

(looping in @carshadi)