PEP 738 (new): Adding Android as a supported platform (GH-3586)

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
Co-authored-by: Carol Willing <carolcode@willingconsulting.com>

Author: 3 people

.github/CODEOWNERS

@@ -615,6 +615,7 @@ peps/pep-0734.rst  @ericsnowcurrently
 peps/pep-0735.rst  @brettcannon
 peps/pep-0736.rst  @gvanrossum @Rosuav
 peps/pep-0737.rst  @vstinner
+peps/pep-0738.rst  @encukou
 # ...
 # peps/pep-0754.rst
 # ...