Add slingql function
Requirements
Need to a new function helper called slingql
. This will take a single query parameter (and optional callback), and invoke the new SlinGQL servlet in Sling https://gitlab.entropy.cc/entropy/slingql
If no callback is provided a Promise should be returned.
The /bin/slingql (location of SlinGQL Servlet) path should be configurable, but default to "/bin/slingql"
Include Jest tests.