PIM-3224 : ProductQueryFactory, new instance for PQB, update grid filters/sorters

We continue to enhance the PQB API to make it useable from different contexts.
Here we introduce a factory to instanciate a new PQB instance (not anymore a service) and we use it in the product grid.

Grid filters and sorters are re-worked to delegate the filtering/sorting to the PQB (without having to write a lot of manipulation of qb, pqb, datasource, etc in the filter itself as today).

The targeted PQB API should be useable as following https://github.com/akeneo/pim-docs/blob/refactor/product_query_builder/cookbook/product/query-products.rst

TODO 
 - [x] re-work the legacy filter datasource adapter
 - [x] remove the test command
 - [x] add missing specs

| Q                    | A
| -------------------- | ---
| Bug fix?             | N
| New feature?         | N
| BC breaks?           | Y
| CI currently passes? | Y
| Tests pass?          | Y
| Scenarios pass?      | Y
| Checkstyle issues?*  | N
| PMD issues?**        | N
| Changelog updated?   | Y
| Fixed tickets        | PIM-3224
| DB schema updated?   |
| Migration script?    |
| Doc PR               |