[jfx18] RFR: 8282766: Create release notes for JavaFX 18 [v2]

[Abhinay Agarwal]

> Add release notes for JavaFX 18 to the repository

Abhinay Agarwal has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - s/Enhancement/Enhancements
 - Create release notes for JavaFX 18

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Changes:
  - all: https://git.openjdk.java.net/jfx/pull/752/files
  - new: https://git.openjdk.java.net/jfx/pull/752/files/e1457420..d5fdfce5

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jfx&pr=752&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jfx&pr=752&range=00-01

  Stats: 442154 lines in 6858 files changed: 139291 ins; 246279 del; 56584 mod
  Patch: https://git.openjdk.java.net/jfx/pull/752.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/752/head:pull/752

PR: https://git.openjdk.java.net/jfx/pull/752