RFR: 7904110: IDEA plugin: Update plugin for new message format [v3]

[Christian Stein]

On Mon, 3 Nov 2025 16:38:59 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

>> The JUnit output was updated to include a timestamp in https://github.com/openjdk/jtreg/commit/470718a0637fbfd9a883de66e7955a4c26e05760
>> 
>> This patch updates the parser in the idea plugin to be able to handle the timestamps.
>
> Jorn Vernee has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add readme updates

Marked as reviewed by cstein (Reviewer).

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PR Review: https://git.openjdk.org/jtreg/pull/300#pullrequestreview-3411920835