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/MangaCard.tsx

@@ -16,6 +16,7 @@ import SpinnerImage from 'components/util/SpinnerImage';
 import { Box, styled } from '@mui/system';
 import { GridLayout, useLibraryOptionsContext } from 'components/context/LibraryOptionsContext';
 import { BACK } from 'util/useBackTo';
+import { IMangaCard } from 'typings';
 
 const BottomGradient = styled('div')({
     position: 'absolute',