Add library categories and favorites

composeApp/src/jvmMain/kotlin/net/sergeych/toread/BookPlatform.jvm.kt

@@ -285,6 +285,12 @@ actual suspend fun markLibraryReadingStatus(fileId: String, status: BookReadingS
     }
 }
 
+actual suspend fun markLibraryFavorite(fileId: String, favorite: Boolean): Boolean = withContext(Dispatchers.IO) {
+    openLibraryDatabase().useLibrary { db ->
+        db.files.updateFavorite(fileId, favorite)
+    }
+}
+
 actual suspend fun shareLibraryBookFile(fileId: String): Boolean = false
 
 actual suspend fun viewLibraryBookFile(fileId: String): Boolean = withContext(Dispatchers.IO) {
@@ -495,6 +501,7 @@ private fun LibraryFileRecord.toLibraryItem(): LibraryItem =
         storageUri = storageUri,
         lastSeenAt = lastSeenAt,
         readingStatus = readingStatus,
+        favorite = favorite,
         lastReadAt = lastReadAt,
         importedAt = importedAt,
     )