Add field management module with database schema and validation

- Introduced `FieldModule` to manage cycles and plans, including read and write controllers.
- Created database migrations for `company_settings`, `cycles`, `cycle_weekdays`, `cycle_destinations`, `plans`, `plan_destinations`, `plan_invoices`, and `plan_packing_slips` tables, including constraints and unique indexes.
- Developed service and repository layers for handling cycle and plan data operations.
- Added unit tests for the cycles and plans services, repositories, and controllers to ensure functionality and correctness.
- Updated application module to include the new `FieldModule` for better organization.

src/modules/configuration/customers/customers.repository.ts

@@ -78,6 +78,20 @@ export class CustomersRepository {
     return this.toDomain(row, contacts);
   }
 
+  async findByCode(code: string): Promise<Customer | null> {
+    const rows: CustomerRow[] = await this.db
+      .select()
+      .from(customers)
+      .where(eq(customers.code, code))
+      .limit(1);
+    const row = rows[0];
+    if (!row) {
+      return null;
+    }
+    const contacts = await this.selectContacts(this.db, row.id);
+    return this.toDomain(row, contacts);
+  }
+
   async create(input: CreateCustomerInput): Promise<Customer> {
     const now = DateTime.fromUnixMs(Date.now());
     const status = input.status ?? Status.create(Status.DEFAULT);