Add interval data layer (#9398)

* Update Manga classes for fetch interval data

* Update per review

bump version

---------

Co-authored-by: quangkieu <qkieu>

app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupManager.kt

@@ -501,6 +501,7 @@ class BackupManager(
                 favorite = manga.favorite,
                 lastUpdate = manga.lastUpdate,
                 nextUpdate = 0L,
+                calculateInterval = 0L,
                 initialized = manga.initialized,
                 viewerFlags = manga.viewerFlags,
                 chapterFlags = manga.chapterFlags,
@@ -526,6 +527,8 @@ class BackupManager(
                 thumbnailUrl = manga.thumbnailUrl,
                 favorite = manga.favorite.toLong(),
                 lastUpdate = manga.lastUpdate,
+                nextUpdate = null,
+                calculateInterval = null,
                 initialized = manga.initialized.toLong(),
                 viewer = manga.viewerFlags,
                 chapterFlags = manga.chapterFlags,