create helper procedure to insert an item

plsql/new_item.sql

@@ -0,0 +1,9 @@
+CREATE OR REPLACE PROCEDURE new_item(
+    i_name item.name%TYPE,
+    i_sell_in item.sell_in%TYPE,
+    i_quality item.quality%TYPE)
+IS
+BEGIN
+  INSERT INTO item (name, sell_in, quality) VALUES (i_name, i_sell_in, i_quality);
+END new_item;
+/