feat adds: SELECT queries to unique file

Author: Edge-J

lesson_25/db/db_app/src/main/resources/queries/jarededge.sql

@@ -0,0 +1,13 @@
+
+SELECT type, COUNT(*) as count 
+FROM media_items 
+GROUP BY type;
+
+SELECT SUM(pages) 
+FROM media_items 
+JOIN checked_out_items ON media_items.id = checked_out_items.item_id;
+
+SELECT guests.name, guests.email, media_items.title 
+FROM guests 
+LEFT JOIN checked_out_items ON guests.email = checked_out_items.email
+LEFT JOIN media_items ON checked_out_items.item_id = media_items.id;