This returns a more comprehensible name than raw weight and slope
metrics and is intended for use in UIs. Now displays human readable
font names in FontSettings, TerminalSettings and CharacterMap.
This works the same way as the command-line usage, searching against the
display name as provided by LibUnicode.
I've modified the search loop to cover every possible unicode
code-point, since my previous logic was flawed. Code-points are not
dense, there are gaps, so simply iterating up to the count of them will
skip ones with higher values. Surprisingly, iterating all 1,114,112 of
them still runs in a third of a second. Computers are fast!
This adds a TextBox along the bottom of the window. Double-clicking on a
character will append it to this box, which you can edit as any other
TextBox, or click the copy button to copy the output to the clipboard.
