Adds missing eclipse project files to `tests/manual/systemmenu`, similar to other projects in `tests/manual`.
--------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - eclipse project Changes: https://git.openjdk.org/jfx/pull/2204/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=2204&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8387773 Stats: 7 lines in 3 files changed: 1 ins; 1 del; 5 mod Patch: https://git.openjdk.org/jfx/pull/2204.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/2204/head:pull/2204 PR: https://git.openjdk.org/jfx/pull/2204
