PEP 772: Packaging governance process (#4218)

* PEP 772: Packaging governance process

Co-Authored-By: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Carol Willing <carolcode@willingconsulting.com>
---------
Co-authored-by: Pradyun Gedam <pradyunsg@users.noreply.github.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Barry Warsaw <barry@python.org>
Co-authored-by: Carol Willing <carolcode@willingconsulting.com>

Author: 4 people

.github/CODEOWNERS

@@ -650,6 +650,7 @@ peps/pep-0768.rst  @pablogsal
 peps/pep-0769.rst  @facundobatista
 peps/pep-0770.rst  @sethmlarson @brettcannon
 peps/pep-0771.rst  @pradyunsg
+peps/pep-0772.rst  @warsaw @pradyunsg
 peps/pep-0773.rst  @zooba
 peps/pep-0774.rst  @savannahostrowski
 # ...