Updating L.DistortableImage.Edit.js method creation to ES6 syntax III

[SMAKSS]

Fixes #720

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[sashadev-sky]

@SMAKSS this is good to go!! I am going to merge, but let me know if you want any help figuring out how to build the project locally :)

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[SMAKSS]

@sashadev-sky Thank you a lot. I would love to learn more about it, also I want to contribute more to this repo, so if any other issue is around without an assignee I like to claim it. 😁

[sashadev-sky]

@SMAKSS thats awesome would love to help you get started. Have you tried following the instructions in https://github.com/publiclab/Leaflet.DistortableImage/blob/main/CONTRIBUTING.md

[SMAKSS]

@sashadev-sky It's very odd, I couldn't get npm run setup to work before, but now it's working perfectly. Thank you so much. 🎉