RFR: JDK-8291901: IGV: Preference menu disappears after JDK-8288750

[Tobias Holenstein]

The `Options` menu is places by default in `Tools` in the menu bar. On macOS however the `Options` menu (called `Preference` on macOS) is placed in the macOS default application menu (`idealgraphvisualizer`) the options bar. Because the `Tools` menu was always empty on macOS it was removed in `JDK-8288750`. Unfortunately, this made the `Options` menu inaccessible on Linux. 


The problem is solved by putting the `Options` menu in a separate tab in the menu bar and keeping the `Tools` menu hidden:
![Options menu](https://user-images.githubusercontent.com/71546117/183050335-7523708a-6137-40dc-bc74-d89f3bf1fba1.png)

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Commit messages:
 - IGV: Preference menu disappears after JDK-8288750

Changes: https://git.openjdk.org/jdk/pull/9771/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9771&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8291901
  Stats: 6 lines in 1 file changed: 6 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/9771.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9771/head:pull/9771

PR: https://git.openjdk.org/jdk/pull/9771