Output from machete-pre-rebase and machete-post-slide-out should end up in Git Console, as with standard git hooks

[PawelLipski]

As for now, there's no way to check that output... it's only included in error message in case of a failure.

Note that implementing this task would mean that there's no longer a shared implementation for hooks b/w backend:impl (machete-status-branch) and frontend:actions (machete-pre-rebase and machete-post-slide-out), and hence the implementation for hooks can be moved out of backend:api.

Inb4, we don't want the output of machete-status-branch hook to end up in Git Console, as it's invoked far too many times.

[PawelLipski]

Huh it might be undoable... mostly coz the output in Git Console seems to come from operations executed via git4idea.commands.GitTextHandler, which are assumed to use git as an executable. This handles git built-in hooks (like pre-commit etc.) well, since they're executed indirectly by git itself... but in case of machete-specific hooks, we run them directly from IntelliJ, bypassing git executable ☹️