feat: init IReader, ReaderConfig, ReaderBuilder

[KirillKurdyukov]

No description provided.

[github-actions]

🌋 Here are results of SLO test for .NET SDK over table-service:

Grafana Dashboard

[github-actions]

🌋 Here are results of SLO test for ADO.NET over query-service:

Grafana Dashboard

[pnv1]

The Reader is created right on the Driver? Not on TopicClient as in other SDKs?

[KirillKurdyukov]

ReaderBuilder:

        var reader = new Reader<TValue>(
            _driver,
            _config,
            Deserializer ?? (IDeserializer<TValue>)(
                Deserializers.DefaultDeserializers.TryGetValue(typeof(TValue), out var deserializer)
                    ? deserializer
                    : throw new YdbWriterException("The serializer is not set")
            )
        );
        
        await reader.Initialize();
        
        return reader;