[jfx23] RFR: 8339247: Create release notes for JavaFX 23

[Johan Vos]

On Thu, 12 Sep 2024 11:43:14 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> Backport the JavaFX 23 release notes to the `jfx23` branch. Note that we will _not_ trigger a respin of JavaFX 23 as a result of this.

Marked as reviewed by jvos (Reviewer).

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PR Review: https://git.openjdk.org/jfx/pull/1563#pullrequestreview-2300796728