Be able to reference a pc.Script or Component directly in the Editor via Script Attributes

Currently, users have to do the following:

SomeScript.attributes.add('someEntity', {type:'entity'});

SomeScript.prototype.initialize = function () {
    this.someOtherScript = someEntity.script.someOtherScript;
};

Which is a little tedious. Maybe we could have some other property on the attribute that attempts to get a property on the referenced Entity and does some post processing before initialize? E.g

SomeScript.attributes.add('someOtherScript', {type:'entity', property: 'script.someOtherScript'});

No implementation file or test is named. Start by locating the Script Attributes handling and entity-reference resolution, then determine how a property such as script.someOtherScript could be resolved before initialize; done means an attribute can directly provide the referenced component without the manual lookup shown.