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

[Kevin Rushforth]

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.

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Commit messages:
 - Backport 639f138380a4091befa3046f7211aab77f8d77dd

Changes: https://git.openjdk.org/jfx/pull/1563/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1563&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339247
  Stats: 145 lines in 1 file changed: 145 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jfx/pull/1563.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1563/head:pull/1563

PR: https://git.openjdk.org/jfx/pull/1563