Include icons and text to denote different resource types

[caufieldjh]

Some visual indicator of different resource types would be very useful.
I'm thinking about high-contrast icons, accompanied by a text label for each.

[iimpulse]

For simplicity can assign icons from here for those categories https://icons.getbootstrap.com/

data model - https://icons.getbootstrap.com/icons/diagram-2/
data resource (may rename this to "graph component") - https://icons.getbootstrap.com/icons/stack/
mappings - https://icons.getbootstrap.com/icons/globe/
knowledge graph- https://icons.getbootstrap.com/icons/lightbulb/
other - https://icons.getbootstrap.com/icons/gear/

We can look elsewhere but this is just a start off the top of my head.

[iimpulse]

Don't be afraid of empty space in UI!

Implementation 1

Implementation 2