Feat search bar#33 2

extracted searchbar from branch feat_EditModelGroupModal

Searchbar component is now available with fulltext search. Added tests and jsdoc. Testcoverage is over 70% for lines and funcs.

Note: the Searchbar is currently not used inside the app because the addModel and editModel Modals are not finished yet. However the tests are working, this ensures a correct implementation and rendering (->snapshot).