build: provide a Bill of Materials artifact for easier integration in…

[nvervelle]

Easier integration of cloudevents into projects (see issue 404). It allows to :

• Have cloudevents-bom with its version in dependencyManagement section (for Maven) or enforcedPlatform (for Gradle)
• Have individual cloudevents modules without their version in each module that depends on cloudevents

[slinkydeveloper]

Thanks for this PR, this is a nice contribution!

I wonder, can you add something to the repo root README and to the docs https://github.com/cloudevents/sdk-java/blob/master/docs/index.md about that?

[nvervelle]

I wonder, can you add something to the repo root README and to the docs https://github.com/cloudevents/sdk-java/blob/master/docs/index.md about that?

Sure, I will add something in the docs :-)

[nvervelle]

@slinkydeveloper

I've added documentation in index.md about the new module, but I'm wondering if I should add something in the root README. The README links to index.md where the new module will be described: do you think something else is needed?

[slinkydeveloper]

do you think something else is needed?

I think it's good now, the pom could be useful for a getting started page, that we don't have atm :)