Currently works but needs some more work to be completed and
to refine and cleanup a few things.
With the new mode now:
- it is possible to have files as top-level entries in a project
- all directories open are on an equal basis
- application can be started without a project directory
- files from different top-level folders are identified in core:find-file
using their top-level folder name as if it was a directory. While
this works it is confusing as we are mixing real directories paths with
top level directory names this latter being an application concept
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