idea: add function to load a vm stack trace into the quickfix window

[sigmundch]

I was just brainstorming with @natebosch about this idea:

I often use stacktraces to debug issues, I go through each line in the stack trace trying to find some details. I manually convert the source location to jump back in the code, desugaring package:* URIs as needed.

It would be great if the vim plugin could support this via some function. The function could let you invoke a command and parse the output, or it could take an input file instead. Not sure how to combine this together with vim-lsc: will the two conflict with each other if there happen to be errors in a file produced from the dart_language_server?