Add capslock.png, keyboard.png and keymap-render.png files to the
spinner and spinfinity themes, this enables keyboard indicator
(keymap and capslock state) support for these themes.
capslock.png was made by me drawing the icon in xfig, then export as
svg, at some blank rows at the bottom and save as png. I've added the
capslock.fig file to the spinner theme dir.
keyboard.png comes from google's material-design-icons (original is
apache licensed): https://github.com/google/material-design-icons/
I've also added a copy of the 2 svg source files to the spinner theme dir.
keymap-render.png is generated by scripts/keymap-render.py.
Fixes: #85
Signed-off-by: Hans de Goede <hdegoede@redhat.com>