Update dashboard component

[SH5H]

issue: #47

I convert components in the dashboard to typescript.

and I check the drag & drop feature

2022-12-04.9.51.43.mov

[vmatsiiako]

@SH5H Quick question. Do UIEvent and WheelEvent need to be imported? It seems like they are not used anywhere if I understand correctly. Otherwise looks very good! Thank you so much :)

[SH5H]

Oh, that's my mistake.
Maybe we have to add a lint rule to avoid this happening.
May I add some lint rules in other PR?

[SH5H]

I remove useless types.
And at last time, I forget to submit the Dropzone component So I add it this time

[vmatsiiako]

This makes sense! Thank you so much for contributing :)

[vmatsiiako]

@SH5H Definitely! Feel free to add some lint rules, I think we can make our lint a bit stricter. Thank you!