separate `utils` dir for user and build, re-enable msdataworkshop to display all user commands

[paulparkinson]

Currently both build and workshop user utils are in the same directory.

This should be separated to be more organized in general but it also appears the ls utils command was removed from the end of the msdataworkshop command at some point.

The msdataworkshop command is meant to be a goto help command that shows all possible utility and short cut commands (useful for debugging and developing/understanding) and thus anything that is under utils dir.

We can do this a few different ways but the simplest is to revert back to having the ls utils at the end of the msdataworkshop command as mentioned which is dynamic when new commands are added. Regardless the directory should be for user scripts/utils only.

[RichardExley]

My reorg is going to change a lot of this so we should coordinate

[paulparkinson]

sounds good - probably I can move all the util commands (from their current home in individual files under the "utils" dir and in env.sh) into a utils.sh file and we can just source that whereever it may land.

[paulparkinson]

Assigning this to you @RichardExley if you don't mind. Definitely feel free to assign it to me if your re-org doesn't cover this of course. Thanks.