* etc/teams/python/python-tier-4-manifest.scm,
* etc/teams/python/python-tier-5-manifest.scm: Replace python-decoupler-py
by python-decoupler, python-pyega3 by python-ega-download-client,
python-waf by waf, python-parted by python-pyparted,
python-vtraag-louvain by python-louvain-igraph,
kconfig-hardened-check by kernel-hardening-checker, python-onnx by onnx,
gajim-omemo by gajim, beets-bandcamp by beets-beetcamp,
python-flask-restplus by python-flask-restx, bazaar by breezy,
or drop them if the replacement is already there.

Tiers manifest files are to help planing packages update in advance.

- 1-3 :: Packages with high impact ratio and mainly updated on
         the python-team branch.
- 4 :: Packages with high number of inputs, building which ensure the
       health of large portion of the graph.
- 5 :: All leaf packages which safe to update directly on master branch.

They may be combined to query for substitute availability during work on
the branch:

    for t in $(seq 5)
    do
        guix time-machine --branch=python-team -- \
            weather --display-missing \
            --substitute-urls=https://ci.guix.gnu.org \
            --manifest="etc/teams/python/python-tier-${t}-manifest.scm"
    done

* etc/teams/python/python-tier-1-manifest.scm: New file.
* etc/teams/python/python-tier-2-manifest.scm: New file.
* etc/teams/python/python-tier-3-manifest.scm: New file.
* etc/teams/python/python-tier-4-manifest.scm: New file.
* etc/teams/python/python-tier-5-manifest.scm: New file.

Fixes: guix/guix#9584
Merges: guix/guix!9601
Reviewed-by: Nicolas Graves <ngraves@ngraves.fr>