feature: easier watching of variables whilst debugging

[shabble]

Currently it requires a click on the [...] in the variables list to display the current value in a popup.
With the popup open, the rest of the UI can't be interacted with until it is closed. So you may need to open multiple variable popups quite frequently, which can be tedious.

Suggest either a tooltip when hovering over the variable button and db debug is active, or maybe implement alternative in the commandline with p[rint] $0 or similar to print value of var:0 to console?