Please add typescript definitions

[hazeled]

In a modern development environment, typescript is necessary for a library to be viable. Not including typescript definitions is a blocker for my team to use this otherwise great library. Adding or including typescript definitions would be a great help for using vue-easy-dnd

[ddenev]

@rlemaigre, could you please let us know of your plans to add typing to the library?

Thank you!

[nicholaszuccarelli]

This is a community project and we would recommend providing us with a fork which includes typescript definitions.

The Vue2 variant did have TS but was removed because I didn't have time for it and needed a working version for Vue3.

Pull requests appreciated.