Include js tests for MonsterMaker contract

[alilloig]

Closes: #4

Description

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For contributor use:

• [ ] Targeted PR against master branch
• [ ] Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• [ ] Code follows the standards mentioned here.
• [ ] Updated relevant documentation
• [ ] Re-reviewed Files changed in the Github PR explorer
• [ ] Added appropriate labels

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Name	Status	Preview	Updated
monster-maker	✅ Ready (Inspect)	Visit Preview	Jan 27, 2023 at 7:45PM (UTC)