Perf: Do not recreate Cell entity just for formatting value

[Koc]

I've found that we are creating Cell entity just to call few methods of it. We can avoid of doing that and speedup /row/table/{tableId} endpoint up to 2x. For a table with 2k rows I've got a latency decrease from 1.15s to 0.568s with my PR.

Without patch

With patch

[blizzz]

Hesitant… not a fan of passing around wild arrays, but at least the source can be considered OK.
Did you see what was slowing down instantiating the entity instance?

[Koc]

I haven't profiled it deeply, but guess this caused by instance creation and calls tons of setters.

IMHO it's totally fine to operate with arrays here, as this is data access layer which produces read models (which are objects BTW). Part of the code which is responsible for write/mutations still operates entities.

@blizzz check referenced PRs to see more impressive speedup 😃