Enhancement - Using infix on instead of operator unaryPlus

[msasikanth]

Right now the library allows to set the target using + operator
constraintLayout.transition { +helloWorldText }

instead of using that, using a infix function named as on will make more sense

eg: constraintLayout.transition { on helloWorldText }

[arunkumar9t2]

Hey,

That's a nice idea. But currently Kotlin does not support using infix function in a lamda receiver context. This means instead of writing on helloWorldText it would be this on helloWorldText or on(helloWorldText) which kinda breaks the point of simpler syntax.

For now I am keeping the + for add target - for remove target.

More about infix inside lamda : https://youtrack.jetbrains.com/issue/KT-1292