* delete trailing whitespace
* Add gitea_group
This will add the `gitea_group: gitea` and will probably
RESOLVE https://github.com/thomas-maurice/ansible-role-gitea/issues/70
* update variable length
update variable length to make this role idempotent
* vars should not include special character
There is this linting message:
```
[208] File permissions unset or incorrect
tasks/main.yml:27
Task/Handler: Create config and data directory
```
I fixed it in this commit and added a github action
to run the official™ ansible linting check!