RFR: 8290844: Add Skin.install() method [v9]

[Kevin Rushforth]

On Thu, 29 Sep 2022 15:58:01 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> - added Skin.install()
>> - javadoc changes for Skinnable.setSkin(Skin)
>
> Andy Goryachev 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 20 additional commits since the last revision:
> 
>  - Merge branch 'openjdk:master' into 8290844.skin.install
>  - 8290844: unit tests
>  - Merge remote-tracking branch 'origin/master' into 8290844.skin.install
>  - 8290844: review comments
>  - 8290844: review comments
>  - Merge remote-tracking branch 'origin/master' into 8290844.skin.install
>  - 8290844: review comments
>  - 8290844: review comments
>  - Merge remote-tracking branch 'origin/master' into 8290844.skin.install
>  - 8290844: javadoc
>  - ... and 10 more: https://git.openjdk.org/jfx/compare/c03446c3...d954aafc

@johanvos Do you have any thoughts on this enhancement? I'm most interested whether you extend any of the built-in JavaFX skin classes in a way that it might cause problems for you if they move some of their setup code from their constructor to their `install` method?

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PR: https://git.openjdk.org/jfx/pull/845