Show equivalent push options at bottom of create merge request page

Problem to solve

While push options is a very powerful feature, it can be opaque and hard to use even for folks who are relatively versed with GitLab and the command line.

It also can be a hard to discover feature.

Proposal

Add the equivalent push option command line at the bottom of the {group}/{project}/-/merge_requests/new For example:

This could get rather long, so maybe under an expand / click to show method from a UX perspective would be better?