Accept search input for namespace selector #175
Description
Summary
Motivation
It takes a while to find the namespace in the list, writing ns:my-long-named-operator takes a while, using the clipboard takes time and occupies the clipboard.
Proposal
a) Accept text input like file browsers do. Just start typing for the right entry to be selected. Writing wo should select woodpecker. This should honestly be handled by the UI toolkit.
b) A search box at the top.