Add a new "Automation Script" feature in Studio

This new feature is under the category Automation. When creating a new Automation script, user gives the id and can choose among void, document(s), blob(s), string for input and outpout types.

For this first step, the script is written in a codemirror with javascript syntax enabled. By default , the content is pre-filled with :

function run(ctx,input,params) {

}