FIX: ard.lua: Assign self.script_dir to package.path
FIX: ard.lua: Assign self.script_dir to package.path

Assign the value of the self.script_dir to the package.path so that
the 'quvi/*' modules can be found.

Reported-by: Fabian Homborg <82fdcde710576c960b66532fc81d0508995ec635@gmail.com>
Signed-off-by: Toni Gundogdu <eac2284b3c43676907b96f08de9d3d52d5df0361@gmail.com>

alech/libquvi-scripts,legatvs/libquvi-scripts,legatvs/libquvi-scripts,alech/libquvi-scripts