Use nvim-remote to edit commit message in current nvim instance

**Is your feature request related to a problem? Please describe.**
There is an experimental feature which opens a file within the current nvim instance:
```yaml
os:
editPreset: nvim-remote
```

It would be great if this could apply to editing commit messages as well.

**Describe the solution you'd like**
Pressing `C` will open the edit commit message dialog within the same nvim instance.

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

**Additional context**
I assume git config affects this, i'm not sure if the default git config behavior of opening a new instance could be overriden?