Add a license on the project

[RignonNoel]

Hi @ParthBarot-BoTreeConsulting and thanks for this great plugin!

We would like to use this plugin and to enhance it, but there are no license actually on the plugin. Could it be possible for you to add a License file on the repository so everybody can use your work accordingly to your will.

It seems like actually you're open with the fact that people can use it, enhance it and share new enhancement, so maybe a MIT License could be a good choice.

But I don't know your opinion about commercial usage and resell of your work, so GPL/AGPL could be a good option also if you want to force people re-share it on same license.