refactor(ui): replace RoleBadge with generic Badge component

- add `dot` and `onRemove` props to Badge for colored dot and removable tag support
- delete RoleBadge component in favor of Badge with dot prop
- update UserCreateModal, UserEditModal, and UsersPage to use Badge instead of RoleBadge
- remove RoleBadge export from shared components index

src/shared/components/index.js

@@ -1,6 +1,5 @@
 // Template components exports
 export { default as Badge, StatusBadge, TypeBadge } from './Badge';
-export { default as RoleBadge } from './RoleBadge';
 export { default as Button } from './Button';
 export { default as Card } from './Card';
 export { default as Input } from './Input';