fix(jcr): add missing PSBinary implementation

[vijaya-boddipudi]

Summary

• Add the missing JCR 2.0 Binary implementation required by PSBaseValue.getBinary().
• Support stream access, positional reads, size reporting, and disposal.

Validation

• mvn-env.bat -pl modules/utils -am compile -DskipTests
• mvn-env.bat -pl modules/utils -am verify -DskipTests
• Module tests ran with one unrelated existing failure in TestPSHtmlCleanerProperties.testFragment3 caused by HTML attribute ordering.

Closes#190