[Distutils] supporting editable installs by PEP-517/518 by shim wheels - proposing a common implementation

[RonnyPfannschmidt]

Hi Everyone,

i'd like to propose a common tooling for installing packages in editable
mode
which is based on generating an actual wheel, which includes shim files
for the python packages
allows to sanely instal/uninstall editable packages

a while back i implemented a prototype in gumby-elf which serves as my
example.
i'd like to start a discussion on this, and hopefully ensure that tools
like flit and setuptools adapt a similar mechanism, ideally sharing a
implementation

once this discussion is finished i'd also like to implement it for
setuptools

-- Ronny