Support formatting in `@value` tag

### Description

Add support for the extended `@value` **Javadoc** tag available since **OpenJDK 20** ([JDK‑8286101]):
```javadoc
{@value optional‑format‑string optional‑reference}
```

[JDK‑8286101]: https://bugs.openjdk.org/browse/JDK-8286101
[JDK‑8286264]: https://bugs.openjdk.org/browse/JDK-8286264

### Use case/motivation

_No response_

### Related issues

- [JDK‑8286101]
- [JDK‑8286264] (**CSR**)

### Are you willing to submit a pull request?

No

### Code of Conduct

Yes

Start by reading the extended @value syntax in JDK-8286101 and the CSR in JDK-8286264, then locate NetBeans' Javadoc handling for @value tags. Done means the OpenJDK 20 optional format string and reference form is supported.

Written by the indexing model from the issue text.