How to Create/Import Description File for JavaScript - Inquiry

I am attempting to add a description that appears in the AutoComplete Menu for various functions as can be seen with many of the built in functions/methods for a Javascript file. How would I go about doing so?

So far I have attempted creating a description.xml file for one of my JavaScript Files and put the file in the same directory with my JavaScript files (./Scripts/). Is there a process I need to perform to actually import this file into the project?
Also, assuming this description.xml file can perform the my desired action, can it be used to add descriptions to functions/methods for multiple JavaScript files? I would assume this is by having multiple of the <Script> tags in the xml, though want to confirm before further proceeding down this route.

Below are images of what I am trying to accomplish, in case I am going down the wrong route entirely:

Current state:                                            Desired State:

I have also attached the description.xml file I am using in attempting this.

Please let me know if any additional information is required!