RFR: 8290473: update Eclipse .classpath in apps, buildSrc [v8]

[Andy Goryachev]

On Tue, 9 Aug 2022 17:17:12 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> The goal of this change is to make sure jfx repo can be imported as a gradle project in eclipse and all nested projects in the workspace compile with no errors.
>> 
>> - updated .classpath entries in apps/
>> - added utf-8 prefs in .settings/
>
> Andy Goryachev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8290473: whitespace

Thank you all!  If there are no more objections, I'd like to get this integrated, as it will save me from duplicate branches and continuous cherry-picking.

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PR: https://git.openjdk.org/jfx/pull/858