refs #23077 [fid_adlr] fix facets color and refactor scss import order

* refactor scss
** import parent scss only from fid-branch
** load _customFonts at first, needed in _customVariables
** remove additional _customFonts import in _customVariables
** create _customTheme.scss & _customComponents.scss
** _customTheme.scss
** import _common.scss here
** move styling from adlr.scss here
** move _lightbox.scss into component-folder
** move _iconcategory.scss & _iconfont.scss into icon-folder
** reorder and add identifier to customVariable blocks

* facet styling
** >remove filter< label to violet
** facet hovering without background
** improve positioning of active filter within facet group