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

[Thiago Milczarek Sayao]

On Mon, 23 Jan 2023 23:55:51 GMT, Thiago Milczarek Sayao <tsayao 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);

This pull request has now been integrated.

Changeset: 6334032f
Author:    Thiago Milczarek Sayao <tsayao at openjdk.org>
URL:       https://git.openjdk.org/jfx/commit/6334032f5796b5226745362401cfd6f5c5597003
Stats:     864 lines in 32 files changed: 347 ins; 511 del; 6 mod

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

Reviewed-by: mhanl, arapte

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PR: https://git.openjdk.org/jfx/pull/1009