fix: add icons styles to dependant components

[InnaAtanasova]

Bring @import "~fundamental-styles/dist/icon"; to all components that rely on icons, such as Buttons, Input-Groups, etc.

[JKMarkowski]

Hi @InnaAtanasova, Could you change importing scss files, to just import IconModule into certain modules? Your solution will make our lib bigger, because css code will be repeated in most components.