Replace base_jsonify w/ jsonifier

Rationale:

1. the name reflects better what it does
   as this is not _just_ a base module

2. solves publication issue on odoo apps store
   due to an old module registered w/ the same name
   that even if un-published blocks publishing the module
   for all versions.
   This in turn, blocks the publication of ALL modules
   that depend on base_jsonify.