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/manga/ChapterCard.tsx

@@ -29,6 +29,7 @@ import { Link } from 'react-router-dom';
 import client from 'util/client';
 import { BACK } from 'util/useBackTo';
 import { getUploadDateString } from 'util/date';
+import { IChapter, IDownloadChapter } from 'typings';
 
 interface IProps {
     chapter: IChapter;