fix(pycardium): Actually include htmlcolor module

Signed-off-by: Rahix <rahix@rahix.de>

pycardium/modules/py/htmlcolor.py

-import color
-
+from color import Color
 
 ALICEBLUE            = Color.from_hex(0xf0f8ff)
 ANTIQUEWHITE         = Color.from_hex(0xfaebd7)

pycardium/modules/py/meson.build

 python_modules = files(
   'color.py',
+  'htmlcolor.py',
 )
 
 frozen_modules = mpy_cross.process(python_modules)