Provide `gzerr` and friends as aliases to `ignerr` in ign-common3 and ign-common4

## Desired behavior
Code in Citadel and Fortress can use `gzerr` and friends instead of `ignerr` and friends so we have less things to change during forward ports.

## Alternatives considered

## Implementation suggestion
in `Console.hh`
```c++

#define gzerr ignerr
#define gzwarn ignwarn
#define gzmsg ignmsg
...
```

