Add rows writers

[illia-li]

As part of #1720
Main changes:

1. Added Row and Rows interfaces for rows writers.
   Now users can write rows data directly from raw to any abstractions.
   Interfaces design like io.Writer interface, with corrections for better processing with db rows.
2. Added implementations for Row and Rows writers.
   One - for write rows to go slices through Slice interface. Second - for write rows to go maps through Map interface.
   And two more for write rows to go slice`s by generics.
3. Added one implementation for Row writer.
   For write solidarity row to solidarity abstraction.
4. Added Slice and Map interfaces for connect Rows writers with different types of go slices and go maps.
5. Added Iter methods for use Row and Rows writers.