bugfix/LS25003713/Compare *ZEROS with number

[davidepalladino-apuliasoft]

Description

This work improves Jariko by adding the ability for IF statement to compare the left side *ZEROS with integer value, like this snippet:

     C                   IF        *ZEROS<999
     C     'TRUE'        DSPLY
     C                   ENDIF

Technical notes

ZeroValue has been improved by adding the missed logic of comparison.

Related to #LS25003713

Checklist:

• If this feature involves RPGLE fixes or improvements, they are well-described in the summary.
• There are tests for this feature.
• RPGLE code used for tests is easily understandable and includes comments that clarify the purpose of this feature.
• The code follows Kotlin conventions (run ./gradlew ktlintCheck).
• The code passes all tests (run ./gradlew check).
• Relevant documentation is included in the docs directory.