RFR: 8316996: Catalog API Enhancement: add a factory method [v4]

[Joe Wang]

> Add a new factory method so that a CatalogResolver can be created with a resolve property on top of the Catalog object.

Joe Wang has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:

 - Merge branch 'master' into JDK-8316996
   Merge before update
 - add a test for the NPE case
 - addressing review comments, plus use URL for relative URI
 - 8316996: Catalog API Enhancement: add a factory method

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Changes:
  - all: https://git.openjdk.org/jdk/pull/16045/files
  - new: https://git.openjdk.org/jdk/pull/16045/files/f1d726ec..a0b5d4a8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16045&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16045&range=02-03

  Stats: 46092 lines in 1883 files changed: 27518 ins; 9505 del; 9069 mod
  Patch: https://git.openjdk.org/jdk/pull/16045.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16045/head:pull/16045

PR: https://git.openjdk.org/jdk/pull/16045