Expose unread and download count of Manga in category api (#227)

* #224 Created view for unread and download badges

* #224 Basic test structure

* Created test and cleaned up a bit

* Move counts to MangaDataClass and delete MangaViewDataClass

* Readded trailing space

* Removed SQL view and calculate with joins now

server/src/main/kotlin/suwayomi/tachidesk/manga/model/dataclass/MangaDataClass.kt

@@ -35,6 +35,8 @@ data class MangaDataClass(
     val realUrl: String? = null,
 
     val freshData: Boolean = false,
+    var unread_count: Int? = null,
+    var download_count: Int? = null
 )
 
 data class PagedMangaListDataClass(