remove manually created typing d ts file (#249)

* Rename file

".d.ts" files are files that are automatically generated during compilation (in case option is set) and shouldn't be created manually.

* Export types and interfaces

* Add missing imports

src/components/library/LibraryOptionsProvider.tsx

@@ -8,6 +8,7 @@
 import LibraryOptionsContext, { DefaultLibraryOptions } from 'components/context/LibraryOptionsContext';
 import React from 'react';
 import useLocalStorage from 'util/useLocalStorage';
+import { LibraryOptions } from 'typings';
 
 interface IProps {
     children: React.ReactNode;