0014 - Drop the "No Use Of Legacy In New Code" restriction

[eternoendless]

Summary:

• Allow the use of legacy classes in Core / PrestaShopBundle
• Deprecate Adapter namespace

Vote

Maintainer	Vote (✅ or ❌)
@atomiix	✅
@eternoendless	✅
@jolelievre	✅
@kpodemski	✅
@matks	✅
@matthieu-rolland
@NeOMakinG	✅
@PierreRambaud	✅
@Progi1984	✅
@PululuK	✅
@sowbiba	✅

[eternoendless]

Accepted by majority. Now we need to update the docs...