jdbc: Support ResultSet.fetchSize

[nicktorwald]

Can be implemented via cursors or, possibly, emulating the behaviour using limit/offset construction.

[Totktonada]

I doubt it is possible to handle a general case using limit / offset. The only way is to support cursors on tarantool side.

Blocked by tarantool/tarantool#3082

[Totktonada]

Moved to JDBC + transactions milestone, because we cannot implement the feature until it will be supported in Tarantool.