XD-2060: Add jdbc source

Something like this:
````xml
<beans:beans profile="use-splitter">
     <task:executor id="executor" pool-size="10"/>
    
     <channel id="output">
             <dispatcher task-executor="executor"/>
     </channel>
     
     <splitter input-channel="process" output-channel="output"/>
</beans:beans>

<beans:beans profile="dont-use-splitter">
     <bridge input-channel="process" output-channel="output"/>
</beans:beans>
````
(Or use existing `taskExecutor` in the ctx, if XD provides that one for Module's ctx)

Having that the `Splitter` jsut send one message to the channel and goes to the next one. That's because the `handle` for each message is happened in the separate Thread.