chore: 6.0.1 release (angular#11204)

chore: bump version and create changelog for version 6.0.0 (angular#1…

…1140)

Correct the tag for 5.2.4

chore: bump to 6.0.0-rc.14 (angular#11081)

chore: update changelog for 6.0.0-rc.12 (angular#10902)

chore: update changelog for 5.2.5 (angular#10901)

chore: bump version to 6.0.0-rc.5 with changelog

chore: changelog for 6.0.0-rc.4 (angular#10846)

chore: bump the version to rc.3 w/ changelog (angular#10829)

cleanup: migrate migration tool to schematics (angular#10736)

* WIP: migrate migration tool to schematics

* address comments

* fix bazel

* make released version work

* Add additional rules

* wip

* wip

* yay, working

* all rules migrated

* combine packages in single `npm i` call

* update schematics version and fix TODOs