SummaryJavadoc: configuration to skip check for simple @return javadoc

Originally posted in #3908, it would be interesting to have a configuration option to skip the SummaryJavadoc check for certain fragments. Specifically, I'm interested in enabling this check but for trivial getters I want to allow just having a concise `@return blabla` javadoc:

```java
/**
* @return the category the article belongs to
*/
public Category getCategory() {
return category;
}
```

I could imagine that this can be made configurable by having a whitelisted javadoc tags config (if the javadoc just has a `@return`, it's fine) or maybe a regex pattern may be provided (if javadoc comment is `^@return .*`, skip the check).

Start with the SummaryJavadoc check and review the original discussion in issue #3908. Define the supported configuration behavior for concise @return-only Javadoc, including how matching fragments are identified, and verify that the chosen behavior is covered by the check's tests.

Written by the indexing model from the issue text.