Feature/library show number of mangas in category (#269)

* Pass optional browser tab only title

Makes it possible to have a different title for the "NavBar" and the browser tab

* Show number of items in category and library

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Co-authored-by: schroda <github@dasch.simplelogin.com>

src/components/context/LibraryOptionsContext.tsx

@@ -29,6 +29,8 @@ export const DefaultLibraryOptions: LibraryOptions = {
     sortDesc: undefined,
     sorts: undefined,
     unread: undefined,
+
+    showTabSize: false,
 };
 
 const LibraryOptionsContext = React.createContext<ContextType>({