feat: Payment system with voucher cards.

feat: Design with inversion dependency injection architecture.
feat: Prettier http middleware.
feat: Re-write items categories with preferred accounts.

server/src/database/seeds/seed_subscriptions_plans.js

@@ -1,22 +0,0 @@
-
-exports.seed = (knex) => {
-  // Deletes ALL existing entries
-  return knex('subscriptions_plans').del()
-    .then(() => {
-      // Inserts seed entries
-      return knex('subscriptions_plans').insert([
-        {
-          id: 1,
-          name: 'basic',
-          price: 80,
-          signup_fee: 0,
-          currency: 'LYD',
-          trial_period: 0,
-          trial_interval: '',
-
-          invoice_period: 1,
-          invoice_interval: 'month',
-        }
-      ]);
-    });
-};