ISSUE-57 Add support for json patch transformation as connect SMT

[vivetiwa]

Summary

Add json patch transformations to support adding complex json to message payload as part of kafka connect SMT. Required to support upsert profile in AEP.

Related Issue

Changes

• Json patch SMT

Relevant Documentation

Please enter the links of any docs updated to reflect this change

How Has This Been Tested?

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [*] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• [x] I have signed the Adobe Open Source CLA.
• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.