feat(reading/index.php.liquid): update reading progress on page load

queries/views/media/books/books.sql

@@ -17,6 +17,7 @@ SELECT
   CONCAT(globals.cdn_url, '/', df.filename_disk) AS image,
   b.favorite,
   b.tattoo,
+  b.isbn,
   (
     SELECT
       array_agg(t.name)

queries/views/media/books/books_progress.sql

@@ -0,0 +1,8 @@
+CREATE OR REPLACE VIEW optimized_books_progress AS
+SELECT
+  isbn,
+  progress
+FROM
+  optimized_books
+WHERE
+  status = 'started';