graphics: Add raw font files back to the tree

These are recovered from an old backup of Freedoom dated 2002-08-5.  I
found a use for them (specifically, PrBoom menu graphics), so here they
are again if anyone else finds them useful :-)

Signed-off-by: Mike Swanson <mikeonthecomputer@gmail.com>

graphics/ajapted/font/font_readme.txt

@@ -0,0 +1,17 @@
+========================================================================
+
+Contributed by Andrew Apted <ajapted@users.sourceforge.net>
+
+FreeDOOM font images (for art directory).
+
+Font was drawn from scratch, scanned, edited, shaded, scaled to 12 
+and 15 pixels high, then colored (except for the "RAW" versions).
+
+The original 30 pixel high (RAW) version is included.
+
+Note that the `Q' character is an exception, and extends a few pixels
+below the normal height.  There's also a few missing characters,
+mainly the exclamation mark `!', comma, and apostrophe, which I fudged
+up when they were needed.
+
+========================================================================