I’ve got a repo i’ve been developing, and I would like to start laying it out properly as a package that, in principle, someong could to an add to.  However, I’d prefer not to trash what I already have.  Is there a way I can “just” use generate to construct the Project.toml file?  I already have some of my codes in  /src folder.
Probably not. Just do
] activate . 
and then ] add all the packages you currently have using in your code.
I got some helpful responses to a similar question here.