This component is used to render chat list categories.
Usage:
```qml
import StatusQ.Components 0.1
StatusChatListCategoryItem {
title: "Public"
onClicked: opened = !opened
onToggleButtonClicked: opened = !opened
onMenuButtonClicked: ...
onAddButtonClicked: ...
addButton.[...]: ... // StatusChatListCategoryItemButton
menuButton.[...]: ... // StatusChatListCategoryItemButton
toggleButton.[...]: ... // StatusChatListCategoryItemButton
}
```
The button components are exposed so their tooltips can be configured
with (internationalized) app messages.
Closes#117
9ae468a70b