RFR: 8091: Refactoring for jmc/application [v4]

[Alex Macdonald]

On Tue, 20 Jun 2023 13:23:39 GMT, Christoph Langer <clanger at openjdk.org> wrote:

>> The sibling PR to #495 for the non-core project.
>> 
>> It cleans up the pom, bumping some versions and fixing URLs.
>> The integration for spotless and checkstyle is cleaner now, allowing to build projects from subdirectories.
>> spotless is called as part of the main build lifecycle now.
>
> Christoph Langer 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 three additional commits since the last revision:
> 
>  - Bunp spotbugs and ignore configuration directory that is created by spotbugs calls
>  - Merge remote-tracking branch 'upstream/master' into JMC-8091
>  - JMC-8091

Marked as reviewed by aptmac (Reviewer).

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PR Review: https://git.openjdk.org/jmc/pull/497#pullrequestreview-1493429128