RFR: 8223373: Remove IntelliJ IDEA specific files from the source code repository

Wed Apr 5 12:22:18 UTC 2023

On Tue, 31 Jan 2023 18:20:05 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> This PR does:
>> 
>> - Remove specific Idea files and let it be imported from gradle;
>> - Adds checkstyle (to use with checkstyle plugin - it will let you know style mistakes);
>> - Configures auto-format to sun style (with the changes mentioned in [Code Style Rules](https://wiki.openjdk.org/display/OpenJFX/Code+Style+Rules));
>> - Automatically sets Copyright notice (updates year too);
>> - Run configurations for samples/toys and builds.
>
> This touches `build.gradle` and `settings.gradle` in addition to IDE-specific files. Those changes will need additional review, so I'm requesting two reviewers.

@kevinrushforth I've reverted the gradle changes, so it pretty much only affect the IDE.

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PR Comment: https://git.openjdk.org/jfx/pull/1009#issuecomment-1497394217