This PR adds the label _state_ to the metric _gitea_users_. With the
change, _gitea_users_ would be reported like this:
```
...
# HELP gitea_users Number of Users
# TYPE gitea_users gauge
gitea_users{state="active"} 20
gitea_users{state="inactive"} 10
...
```
The metrics above would be from a Gitea instance with 30 user accounts.
20 of the accounts are active and 10 of the accounts are not active.
Resolve#34325