Add string type to width and height

[1rens1]

Is your feature request related to a problem? Please describe. The width and height props only has a number type. Although you can pass it a string which works fine, but it also displays an error with TypeScript that says Type 'string' is not assignable to type 'number'.

Describe the solution you'd like Add string type to the width and height props

[denisstasyev]

Thanks for the enhancement, I will be grateful for the pull request) Or I’ll do it myself a little later today)