app_deps.erl enhancements

[Zabrane]

@ferd would it be possible to add ebin directories under _checkouts to script/app_deps.erl?

main(_) ->
    AppFiles = filelib:wildcard("deps/*/ebin/*.app")
               ++
               filelib:wildcard("apps/*/ebin/*.app")
               ++
               filelib:wildcard("ebin/*.app")
               ++
               filelib:wildcard("_build/default/lib/*/ebin/*.app")
               ++
               filelib:wildcard("_checkouts/*/ebin/*.app"), %% _checkouts
    to_graphviz(read_deps(AppFiles)).

[ferd]

It may actually make more sense given newer rebar3 releases to go for _build/default/checkouts/*/ebin/*.app to use that path rather than directly in the checkouts directory I think?

[Zabrane]

@ferd works for me