Added tableview that lists all the available fonts

Anywhere on the clock view can be toched to go to the font list.
However, there’s no way to get back right now. The idea is that
selecting one of the fonts will take you back to the clock view.
Updated to use fonts

Font TableView now renders font list with corresponding font
Selecting a font now unwinds back to clock view with the correct font.
Removed breakpoint list
Fixed view contstraints to center label and sorted font list

Updated view constraints to use “Center in” for X and Y instead of
fixed values.

Changed clock view to a black background and white text

Sorted font list
Added preferences view

Font section goes to font table view
The rest of the items have not been wired
No subclass has been created yet
Added Preferences View

Still need to wire up the color control and the brightness control
Updated the .gitignore file to exclude AppCode files