Search support

[Gert-dev]

Is it possible that searching currently isn't supported? The Ctrl-F shortcut seems to trigger the bottom panel rather than an actual search bar. After taking the application for a spin with a 4 MB text file, I found myself looking for a way to 'jump to the first hit' and search for something, but I couldn't immediately find any.

Tangentially related to #53 as it is also an idea to improve discoverability of hits.

[phastmike]

Hi again @Gert-dev

To search I tend to create a tag or use the default TreeView search feature which kinda works for me and in my work process i live perfectly ok with it.

There's also the fact that opting for the GtkTreeView as an implementation for the solution, it limited a bit as I'm already using filtering capabilities of that same tree view. Adding a sorted model in conjunction with the filters changes the resulting behavior. At the same time it can be considered as a real time tag.

This will also change as we move away from the GtkTreeView.

Let's see what can be done here.

Thank you for the feeback.