Renamed Deps to Tracker and added deprecated deps package. Tests pass
Renamed Deps to Tracker in all packages
Rename Deps to Tracker in the docs
Run JSDoc to update API and names.json
Fix comment and symlink
Rename Deps to Tracker

Summary:
Make a new package called tracker that exports Tracker, add package deps that exports Deps = Tracker.

Replace all occurences of Deps namespace with Tracker.

Replace it all in docs as well.

Test Plan: Ran test-packages, looked at docs

Reviewers: avital, dgreenspan

Reviewed By: dgreenspan

CC: nim, emily, dgreenspan

Differential Revision: https://phabricator.meteor.com/D784