更新界面

app/src/main/java/io/legato/kazusa/constant/PreferKey.kt

@@ -37,6 +37,8 @@ object PreferKey {
     const val enableReview = "enableReview"
     const val showRss = "showRss"
     const val bookshelfLayout = "bookshelfLayout"
+    const val bookshelfLayoutPortrait = "bookshelfLayoutPortrait"
+    const val bookshelfLayoutLandscape = "bookshelf_layout_landscape"
     const val bookshelfSort = "bookshelfSort"
     const val bookExportFileName = "bookExportFileName"
     const val bookImportFileName = "bookImportFileName"