Added a new table for stocks.

scripts/create-dev.sql

+DROP TABLE IF EXISTS stocks;
 DROP TABLE IF EXISTS registry;
 DROP TABLE IF EXISTS transaction_types;
 DROP TABLE IF EXISTS accounts;
@@ -40,6 +41,13 @@ CREATE TABLE registry (
     FOREIGN KEY (account_id) REFERENCES accounts (id)
 );
 
+CREATE TABLE stocks (
+    id INTEGER PRIMARY KEY,
+    item INTEGER NOT NULL,
+    quantity INTEGER NOT NULL,
+    FOREIGN KEY (item) REFERENCES items (ref)
+);
+
 INSERT INTO categories (id, name)
     VALUES (1, "Boissons"),
 	       (2, "Snacks");
@@ -78,3 +86,8 @@ INSERT INTO registry (id, dt, type, account_id, debit, credit, remarks)
 		   (9,  datetime("2021-09-21 05:00:00"), 3, 7,  72.0,  null, "Facture vente = Dette client"),
 		   (10, datetime("2021-09-21 05:30:00"), 4, 7,  null,  72.0, "Encaissement de l'argent"),
 		   (11, datetime("2021-09-21 06:00:00"), 4, 2,  72.0,  null, "= La dette du client est soldée");
+
+INSERT INTO stocks (id, item, quantity)
+    VALUES(1, 1, 25),
+    VALUES(2, 2, 12),
+    VALUES(3, 3, 50);
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