add input type file to the angular package

[robertIsaac]

add angular component similar to https://clarity.design/core-components/file/

[mathisscott]

There is a cds-file angular component in the core library's companion @cds/angular package... https://www.npmjs.com/package/@cds/angular

[robertIsaac]

@mathisscott I mean a component like that https://clarity.design/angular-components/select/
there is a big difference when working with both in the same form