Problem: filetype: karel files are not detected
Solution: detect '*.kl' files as karel filetype,
include syntax and filetype plugin
(Kirill Morozov)
closes: #16075
Co-authored-by: KnoP-01 <knosowski@graeffrobotics.de>
Signed-off-by: Kirill Morozov <kirill@robotix.pro>
Signed-off-by: Christian Brabandt <cb@256bit.org>
