KT 4549: Swap Binary Expression Intention

This pull request addresses the Intention Action, to flip the left and right operands in a binary expression.
For example: ```val x = 5 + 6``` could be changed to ```val x = 6 + 5``` using this intention action.

Note: 1st PR was closed. This is 2nd.
The previous PR is here: https://github.com/JetBrains/kotlin/pull/363