[Lazarus] Universal FontDialog for LCL

[Werner Pamler]

Am 07.03.2019 um 14:12 schrieb AlexeyT via lazarus:
> Here's my GH repo with dialog which almost 100% mimics GTK2 
> FontDialog. https://github.com/alexey-t/atfontdialog

On Windows the font dialog also allows to select the color which is 
missing here.

An issue: the dialog is resizable, but the height jumps back to its 
original value when I click into one of the listboxes.