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/util/readerSettings.ts

@@ -8,6 +8,7 @@
 
 import { getMetadataFrom, requestUpdateMangaMetadata, requestUpdateServerMetadata } from 'util/metadata';
 import { useQuery } from 'util/client';
+import { IManga, IMetadata, IMetadataHolder, IReaderSettings, MetadataKeyValuePair } from 'typings';
 
 export const getDefaultSettings = (forceUndefined: boolean = false) =>
     ({