git: openjdk/jfx: jfx16: 8262460: Create release notes for JavaFX 16

[Johan Vos]

Changeset: e0ce73a3
Author:    Abhinay Agarwal <abhinay.agarwal at gluonhq.com>
Committer: Johan Vos <jvos at openjdk.org>
Date:      2021-03-04 11:58:59 +0000
URL:       https://git.openjdk.java.net/jfx/commit/e0ce73a3

8262460: Create release notes for JavaFX 16

Reviewed-by: kcr, jvos

+ doc-files/release-notes-16.md