RFR: 8323698: Class use page does not include extends/implements type arguments

[Chen Liang]

Currently in the javadoc tool, the generated class use page does not track the occurrences of a class in the type arguments of the extends or implements list, where they can appear. (See more details on the JBS issue) For example:

public class One {}


import java.util.*;
public class Two extends ArrayList<One> implements Comparator<One> {
}


This patch proposes to add new 2 usage categories, "Classes that extend types with arguments of type" and "Classes that implement types with arguments of type" to describe the missing usage scenarios.

A preview of the new use page with the 2 new categories, generated based on the example above, can be found here: https://cr.openjdk.org/~liach/8323698-javadocuse/doc/class-use/One.html

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Commit messages:
 - Use page to check extends/implements type arguments

Changes: https://git.openjdk.org/jdk/pull/17414/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17414&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8323698
  Stats: 92 lines in 4 files changed: 87 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/17414.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17414/head:pull/17414

PR: https://git.openjdk.org/jdk/pull/17414