4.x: Reduce API surface via introducing configuration records #8173

Many operators have overloads with delayError, bufferSize and/or prefetch which adds a lot of methods because Java doesn't support default parameter values.

The newer java version adds records which can capture the parameters with minimal overhead and future Java language enhancements will make it even easier.

So remove all the various extra overloads and combine them into a base operator + operator + config versions, including all the DelayError variants.