[jfx21u] RFR: 8317842: Create release notes for JavaFX 21.0.1

[Kevin Rushforth]

On Tue, 10 Oct 2023 23:24:05 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> Release notes for JavaFX 21.0.1.
> 
> Notes to reviewers:
> 
> I used the following filter to pick the issues:
> 
> https://bugs.openjdk.org/issues/?filter=44663
> 
> The original filter, with the backport IDs, is here:
> 
> https://bugs.openjdk.org/issues/?filter=44662
> 
> As usual, I excluded test bugs, cleanup bugs, etc. I manually excludes 4 additional bugs, one of which was a README change (does not affect the product), and the other three were introduced and fixed in the same release.

Reviewers: @johanvos @abhinayagarwal

There are no security fixes this time, so this PR is ready for final review.

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PR Comment: https://git.openjdk.org/jfx21u/pull/19#issuecomment-1756458351
PR Comment: https://git.openjdk.org/jfx21u/pull/19#issuecomment-1766462373