[joshinii]

Adds Javadoc to the three undocumented @parameter fields in
AbstractSurefireMojo, describing what each reporter controls and
linking to the JUnit 5 Platform example page for the full list of
nested configuration elements.

Closes #3386

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Pull request overview

This PR improves the usability of the Surefire plugin configuration by adding missing Javadoc for three @Parameter extension/reporter fields in AbstractSurefireMojo, clarifying what each reporter controls and pointing users to the JUnit Platform example page for the full nested configuration options.

Changes:

• Documented statelessTestsetReporter as the configuration entry point for XML TEST-*.xml reporting, including precedence notes for the deprecated disableXmlReport.
• Documented consoleOutputReporter for captured stdout/stderr handling, including redirectTestOutputToFile, disable, and encoding.
• Documented statelessTestsetInfoReporter as the configuration for the per-testset console/text summary reporter.