workflow frontend plugin class belongs in cms namespace

In repository.cnd:

[hippo:workflow] > hippo:type

• hippo:workflow (string)
• hippo:renderer (string)
• hippo:roles (string) multiple
  + hippo:types (hippo:types) = hippo:types mandatory autocreated

Should be:

[hippo:workflow] > hippo:type

• hippo:workflow (string)
• hippo:roles (string) multiple
  + hippo:types (hippo:types) = hippo:types mandatory autocreated

[frontend:workflow] > hippo:workflow

• frontend:renderer (string)