[POC][WIP] PIM-3260 : product update api

Propose a way to easily mass update products via an explicit API

First draft to discuss concern and architecture

| Q                    | A
| -------------------- | ---
| Bug fix?             |
| New feature?         |
| BC breaks?           |
| CI currently passes? |
| Tests pass?          |
| Scenarios pass?      |
| Checkstyle issues?*  |
| PMD issues?**        |
| Changelog updated?   |
| Fixed tickets        |
| DB schema updated?   |
| Migration script?    |
| Doc PR               |
we can discuss the order of parameters, with current one,
- not localizable / not scopable, copyValue([], 'name', 'my name');
- localizable / not scopable, copyValue([], 'meta_titles', 'my title', 'en_US', 'fr_FR');
- not localizable / scopable, copyValue([], 'price', '22 EUR', null, null, 'ecommerce', 'mobile');
- localizable / scopable, copyValue([], 'desc', 'my title', 'en_US', 'fr_FR', 'ecommerce', 'mobile');

if we order by fromLocale, fromScope, toLocale, toScope the usage seems a bit weird on,
- not localizable / not scopable, copyValue([], 'name', 'my name');
- localizable / not scopable, copyValue([], 'meta_titles', 'my title', 'en_US', null, 'fr_FR');
- not localizable / scopable, copyValue([], 'price', '22 EUR', null, 'ecommerce', null, 'mobile');
- localizable / scopable, copyValue([], 'desc', 'my title', 'en_US', 'fr_FR', 'ecommerce', 'mobile');