Add a slash command to choose in which branch the MR will be done
Description
I love the slash commands to assign persons labels and milestones to MR, however, I miss one feature.
In our release cycle, we merge to a branch different from master but to do so, I nee to click on Change branch in the MR and search for my branch which force me to use my mouse and redirect to another page
Proposal
Wouldn't it be nice to have a /branch slash command to allow branch selection without using the mouse ?