Parse list into list type instead of array

[simPod]

Q	A
Bug fix?	no
New feature?	yes
Doc updated	no
BC breaks?	yes
Deprecations?	no
Tests pass?	yes
License	MIT

I noticed in tests we already expect list<> input for serialization

serializer/tests/Serializer/JsonSerializationTest.php

Line 403 in 4dc94aa

[['a', 'b'], '["a","b"]', SerializationContext::create()->setInitialType('list<string>')],

therefore I deduced we can use list type internally.

[scyzoryck]

Sounds reasonable. I will release it on Monday.