RFR: 8286654: Add an optional description accessor on ToolProvider interface

[Jonathan Gibbons]

On Wed, 18 May 2022 14:56:47 GMT, Christian Stein <cstein at openjdk.org> wrote:

> This PR adds an optional description accessor on `ToolProvider` interface.
> 
> This PR also adds short description for each of the listed tool:
> - `jar`
> - `javac`
> - `javadoc`
> - `javap` and `jdeps`
> - `jlink` and `jmod`
> - `jpackage`

Marked as reviewed by jjg (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/8772