Add existing package nodejs-groovebasin
Rewrite package nodejs-groovebasin

Package produces a valid application. However, the resultant applicaiton can't
be run by root, which is problematic. When the application is started by a
non-root user, errors occur due to insufficent permissins for creating config
files and database files.

Also, no .service file is installed.
Add executable script /usr/bin/groovebasin

When groovebasin is installed, install an executable script too. This allows
normal users to run the application.