Have 'Completed builds' list show the repo the new builds are in

[dcookspi]

Is your feature request related to a problem? Please describe.

Some users would like to see the repo name included in the list of Completed builds shown at the end of an spk build, e.g. local/mypackagethatjustbuild/S0M3BU1LDID. It will make it clear where the builds ended up and save them having to add the repo name when they want to copy and paste a build id line.

Describe the solution you'd like
spk build currently finishes with output like this:

Completed builds:
   mypkg/0.3.0/src
   mypkg/0.3.0/LWWC62UL variant index 0, ...
   ...

We'd like it to look like this instead:

Completed builds:
   local/mypkg/0.3.0/src
   local/mypkg/0.3.0/LWWC62UL variant index 0, ...
   ...

Additional context
I had a quick look and it'll involve something like turning the BuildIdents returned from the binary build method into LocatedBuildIdents to keep the repo with the build, adjusting the BuildResult enum to contain them, and then adjusting their display to include their repo name.

[rydrman]

Are the builds not always stored in the local repo?

[dcookspi]

Are the builds not always stored in the local repo?

They are, but I think the users would like to not have to type local/ when copying the build identifiers around,