Used `xxd -i icon64.png data.h` to get the raw array from a 64x64 export
of the SVG icon. Also improved the formatting of the splash array to avoid
having 65k char-long lines.
add version_info and icon sections in "export to windows platform".
add version_info and icon to godot exe file (editor & template exe).
fix an problem in image class.
change all default icons to android export icon (a little more rounded).
create an python script for convert file to cpp byte array for use in
'splash.h'.
