NEW FEATURE: Implement formatoption widgets

[Chilipp]

Summary

With psyplot 1.1.0, the formatoption widget framework has been introduced
that makes it possible to implement a fmt specific widget into the
formatoptions widget of the GUI. However, this is still missing for most of the
formatoptions

Reason

It makes it faster and more intuitive to handle and update the plots through
the GUI (see also https://github.com/Chilipp/psy-simple/issues/1)

Detailed explanation

ci	fit	fix	id_color
ideal	line_xlim	nboot	p0
param_bounds	xrange	yrange