Add parameter in function maybeGeneratePropertiesFile in order to choose to escape unicode or not.

[gary258796]

Context

By #10 , we need a parameter to set in order to not escape unicode if we want.

Contributor Checklist

• Added relevant integration or unit tests to verify the changes
• Update the Readme or any other documentation (including relevant Javadoc)
• Ensured that tests pass locally: mvn clean package
• Ensured that the code meets the current checkstyle coding style definition: mvn clean verify -Pcheckstyle -Dmaven.test.skip=true -B

[TheSnoozer]

Thanks for your investigation and contribution to the fix!