Terminal filters

[mottosso]

Goal

Enable filtering of information in the terminal.

This will also be used to "inspect" an item. As in, when indicating that you wish to inspect an item, the tab will change to the terminal with filters set based on the item.

In the case of inspecting an instance, the terminal will be set to only show messages related to it.

Implementation

A QSortFilterProxyModel (gah, that name) will be added on-top of the existing terminal model, with buttons along the bottom to control it's function.