Feature/show extension repo only in case more than one repo is set (#543)

* Rename "isSingleRepoSet" prop to "showSourceRepo"

* Show repo of source in case sources of different repos are installed

* Center the source icon

src/typings.ts

@@ -17,6 +17,7 @@ import {
     GetMangaQuery,
     GetServerSettingsQuery,
     GetSourceQuery,
+    GetSourcesQuery,
     MetaType,
     SourcePreferenceChangeInput,
 } from '@/lib/graphql/generated/graphql.ts';
@@ -44,6 +45,8 @@ export interface ISource {
     displayName: string;
 }
 
+export type TPartialSource = GetSourcesQuery['sources']['nodes'][number];
+
 export type SourceFilters = GetSourceQuery['source']['filters'][number];
 
 export interface IMetadataMigration {