Using lazygit as GIT_EDITOR

**Topic**
I would like to use `lazygit` as my `GIT_EDITOR` (`core.editor`)

E.g. I'd like to replace:

```
export GIT_EDITOR="vim +startinsert"
```

with `lazygit`. Possible?

**Your thoughts**
Ideally, you'd want `lazygit` to open with the commit panel open already, so you could just type and hit enter.