support string classpath splitting

[tthornton3-chwy]

Alright this might be a little niche, but I do think it'll come in handy for more than just me :)

The classpath resolver is being finnicky, and including jars that it shouldn't be (for the test scope, it seems). I'm not too worried about it, I know the configuration for this project is a bit "non-typical". So what I am doing is using launch.json -> configurations -> ( java ) -> classPaths to "exclude" them. Great, it works!

However, instead of manually adding each of them in, i'm running an input like so "!${input:exclude-test-fixtures}",. This'll automagically go and get the jar paths that need skipping, separated by a colon (the proper delimiter). Ex: !/app/jar-1.jar:!/app/jar-2.jar:!/app/jar-2.jar

Then with this change, all of those can be skipped proper.

I don't think this'll introduce any issues, since a path that would've been there could never include a colon already.

[tthornton3-chwy]

@testforstephen @jdneo this should be a quick and easy one, and then I don't have to have my own version installed / need to share it manually with the team 😆🥲

[tthornton3-chwy]

@testforstephen @jdneo @chagong @wenytang-ms bump! This is backwards compatible, hurts nothing, and is useful for some power-user configurations :) Can we please get it in? Or tell me what I need to do to be able to get it in?

[tthornton3-chwy]

Thank you @chagong :) You rock!!!