Add back deduping for local dev BSI runs (#4489)
Add back deduping for local dev BSI runs (#4489)

* Add back deduping for local BSI runs

This re-adds deduping but getting a list of all package names and adding them to
the list of dedupable packages. Not having this causes some complications with,
at least my teams, local workflows.

* Adjust file type check

* Lint fixes

* Switch to file path instead of process.cwd()

* Switch to simpler method that es-dev-server used
Brightspace/brightspace-integration,Brightspace/brightspace-integration