dev: when ydb.ParamsBuilder & ydb.ParamsFromMap will stop being experimental

[flymedllva]

When will ydb.ParamsBuilder & ydb.ParamsFromMap stop being experimental?

Now it's not clear how to use Query() other than through these functions, it seems they should stop being experimental.

I would also like to propose to move params.Parameters from the internal package, so that they can be passed between functions. Now I do not understand how to make a function that collects parameters of the request, except next to the transaction, it is often not convenient at all, I want to take the collection of the request in a separate function, perhaps to collect it before the start of the transaction.