Add more onErrorXXX stream operators.

[He-Pin]

Motivation:
As a daily Java developer , I think the onError* operators are very easy to use.
eg: spring-projects/spring-framework#31352
refs:reactor/reactor-core#535

Currently:

Reactor-core	Pekko	Suggestion
onErrorResume	recoverWith
onErrorComplete	onErrorComplete ( added #624)
onErrorReturn	recover/recoverWith
onErrorContinue	withAttributes(...)
onErrorStop	withAttributes/defaultBehavior
onErrorMap	mapError

[laglangyue]

if possile, can I work for the simpler one of them, but I am not similiar with this module.

[He-Pin]

@laglangyue Thanks, I would like to gather more information before anyone from the community put effects on it.
As a Java developer I think the current api is not that easy to use.

[laglangyue]

As a Java developer I think the current api is not that easy to use.

fine，good luck

[mdedetrich]

I think that this should be discussed more generally on github discussions/mailing list.

I am not against this in principle and I also have my own ideas regarding the attributes boilerplate (I.e. why isn't there an implicit's api for attributes for Scala) but we really should look at this comprehensively before coding it.