cleosrv: Don't print config path with 'version' command

```bash
cleosrv version

Using config file: /home/USER/.config/cleosrv.yml
dev
```

Probably just structure it the same way as `cleoc` and have some commands that don't read the config at all.

Or don't output the config path by default (maybe only on server start up).

Start by comparing the cleosrv version command with the corresponding cleoc command, then trace where cleosrv reads and prints the config path. The change is complete when cleosrv version prints its version without the config path, while server startup behavior remains appropriate; add or update coverage if the project has tests for these commands.

Written by the indexing model from the issue text.