Add PreferJavaUtilObjectsRequireNonNullElse recipe for Java 11

[josephw]

What's changed?

This adds PreferJavaUtilObjectsRequireNonNullElse, a ChangeMethodName/ChangeMethodTargetToStatic combination to convert Guava's MoreObjects.firstNonNull to the Java 9 equivalent of Objects.requireNonNullElse.

What's your motivation?

I'm aiming to extend the set of Guava calls that are replaced by direct equivalents, and get that included in a bulk recipe.

Anything in particular you'd like reviewers to focus on?

This method only shows up in Java 9. I've taken the approach of adding a new NoGuavaJava11 recipe, in the style of the UpgradeToJavaX recipes, so this doesn't break Java 8 projects, or require users to nominate the individual recipe directly.

The method is generic; I found that it didn't match with "firstNonNull(Object, Object)", so I'm using "..".

Anyone you would like to review specifically?

Have you considered any alternatives or workarounds?

As I need this recipe, my alternative is to keep it in a local ruleset.

Any additional context

Checklist

• I've added unit tests to cover both positive and negative cases
• I've added the license header to any new files through ./gradlew licenseFormat
• I've used the IntelliJ IDEA auto-formatter on affected files

[timtebeek]

Looks good to me! Thanks for adding an immediate PR.

[timtebeek]

You should be able to use our snapshot versions to try this locally; I expect we'll follow up with a release in the next week or two. Thanks again!