Use generic skeleton for complete.bash

src/complete.bash → src/complete.bash.skel

 #!/bin/bash
 
-__SATURNIN_COMPLETE_CMDNAME=saturnin-demo
+__SATURNIN_COMPLETE_CMDNAME=__MKIT_PROJ_PKGNAME__
 
 #shellcheck disable=SC2016
 __SATURNIN_COMPLETE_CODETMPL='