R1:ffadf64751a5

Badges v0.1

Summary:
Basic plumbing for Badges application.

- You can make Badges.
- You can look at a list of them.
- They can be edited.
- They can be assigned to people.
- You can revoke them from people.
- You can subscribe to them.

Test Plan: Make Badges with various options. Give them to people. Take them away from people.

Reviewers: lpriestley, epriestley

Reviewed By: epriestley

Subscribers: tycho.tatitscheff, johnny-bit, epriestley, Korvin

Maniphest Tasks: T6526

Differential Revision…