Bundle some add-ons in the Docker image and snap package by default #3242
Description
As a user I want the gateway to support some devices out of the box, so I'm not confused about the fact that no devices can be added by default.
In the Raspbian OS images we used to bundle the:
with the gateway by default. This meant that the gateway supported some devices by default.
Currently neither the Docker image nor the snap package bundle any add-ons by default, which means that out of the box no devices are actually supported until you install some add-ons!
I think we should bundle the above add-ons by default, but replace the Web Thing Adapter with the WoT Adapter once it is released.