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/reader/Page.tsx

@@ -9,6 +9,7 @@ import React, { useRef } from 'react';
 import SpinnerImage from 'components/util/SpinnerImage';
 import useLocalStorage from 'util/useLocalStorage';
 import Box from '@mui/system/Box';
+import { IReaderSettings } from 'typings';
 
 function imageStyle(settings: IReaderSettings): any {
     const [dimensions, setDimensions] = React.useState({