Wishlist: debugging without all the auxiliary windows open

I'd like to be able to use vim-debug without having half of my screen space taken over by various (undoubtely very informative) windows. Ideally, I should be able to show/hide every one of them individually on a whim, with an option letting me ask that none be opened by default when I initiate a debugging session.

No files or tests are named. Start at the debugging-session entry point and locate where the auxiliary windows are opened; then trace how their visibility is managed. Done means each window can be shown or hidden independently and a setting can prevent all of them from opening by default.

Written by the indexing model from the issue text.