fix(backend): fix changes on sql cmd in orders due to refacto of #70

[DipandaAser]

fix changes in sql cmd in orders due to refacto of #70

Why ?
After refacto the words orders has been changes by shop , so when we perform a GET on orders endpoints we got an error

SELECT "orders"."id","orders"."created_at","orders"."updated_at","orders"."deleted_at","orders"."wallet_id","orders"."total_amount","orders"."state","orders"."decision" FROM "orders" JOIN wallets on wallets.wallet_id = shop.w
allet_id and wallets.organisation_id = 1 WHERE state = 'not paid' AND "orders"."deleted_at" IS NULL LIMIT 999
2021/09/28 10:54:32 ERREUR: entrée manquante de la clause FROM pour la table « shop » (SQLSTATE 42P01); ERREUR: entrée manquante de la clause FROM pour la table « shop » (SQLSTATE 42P01)

How ?
Replace the word shop in sql cmd by orders in the file /backend/app/shop/orders/orders_db.go

Steps to verify:

$> make run
$> curl --location --request GET '127.0.0.1:9999/api/orders?limit=999&offset=0&state=not paid' \ --header 'Tenant: 1'

** Screenshots (optional)

[Sanix-Darker]

Thanks for this PR !
I completely forgot to change that !