CountMinSketch with Int type in the internal table

[ajtkulov]

The current implementation has Long type for the internal table.
For a lot of real use cases, we need only Int (in general it would be great to have a generic solution, like long/int/short(?)).

For instance, I have 50M objects. It's impossible to have a value > 50M in the internal table. So, Int value is enough, in this case, Long type is a waste (in 2 times more memory consumption in comparison with Int type).