Cannot Include Assets(.txt) Files In Katalon Custom Plugin

Hi Team,
I am creating a custom plugin jar, I want to include .txt files to the plugin which are part on Include/scripts/groovy. I have made changes in my build.gradle as well but when the jar gets created those .txt files are not part of my .jar. The .txt files gets excluded while creating a jar. How can I include non java files in my custom plugin jar?
Waiting for response.

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