Add prop for Text Field's size

[butaixianran]

Is your feature request related to a problem? Please describe. Material Design's text field size is way too big. Not good for desktop app. In React's Material UI library, they offer a prop as "size" which can make it smaller.

Actually, React's Material UI library offers "size" prop to a lot of components which are too big for desktop web page. So their UI library can be good for both mobile and desktop.

Describe the solution you'd like Svelte-material-ui should do the same. A "size" prop could be very helpful for those components which are too big for desktop app.

Additional context Check out React's Material UI library's solution: https://mui.com/components/text-fields/#sizes