Craft 5 migration should report back what entry types were renamed

[Mosnar]

After running a Craft 5 migration, there's a good chance the user will end up with entry type name collisions from matrix blocks resulting in entry types like: video, video2, video3. Rather than silently appending a number, the migration should report back what changes were made to give the developer a chance to make template changes if needed.

Less likely to be an issue, it might not be a bad idea to do the same thing for fields.