Add customers management module with database schema and validation

- Introduced `CustomersModule` to manage customer data, including read and write controllers.
- Created database migrations for the `customers` and `customer_contacts` tables, including constraints and unique indexes.
- Implemented validation for customer fields such as name, code, and address with corresponding utility functions.
- Developed service and repository layers for handling customer data operations.
- Added unit tests for the customers service, repository, and controllers to ensure functionality and correctness.
- Updated application module to include the new `CustomersModule` for better organization.

drizzle/migrations/0006_customers.sql

@@ -0,0 +1,35 @@
+CREATE TABLE "customers" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"code" varchar(16) NOT NULL,
+	"name" varchar(64) NOT NULL,
+	"phone" text NOT NULL,
+	"address" text NOT NULL,
+	"latitude" double precision,
+	"longitude" double precision,
+	"nfc_id" text,
+	"status" text DEFAULT 'draft' NOT NULL,
+	"created_at" bigint NOT NULL,
+	"updated_at" bigint NOT NULL,
+	"created_by" uuid NOT NULL,
+	"updated_by" uuid NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "customer_contacts" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"customer_id" uuid NOT NULL,
+	"name" varchar(64) NOT NULL,
+	"job_title" varchar(64),
+	"phone" text,
+	"mobile_phone" text,
+	"notes" text
+);
+--> statement-breakpoint
+ALTER TABLE "customers" ADD CONSTRAINT "customers_created_by_users_id_fk" FOREIGN KEY ("created_by") REFERENCES "public"."users"("id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "customers" ADD CONSTRAINT "customers_updated_by_users_id_fk" FOREIGN KEY ("updated_by") REFERENCES "public"."users"("id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "customer_contacts" ADD CONSTRAINT "customer_contacts_customer_id_customers_id_fk" FOREIGN KEY ("customer_id") REFERENCES "public"."customers"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+CREATE UNIQUE INDEX "customers_code_unique" ON "customers" USING btree ("code");--> statement-breakpoint
+CREATE UNIQUE INDEX "customers_nfc_id_unique" ON "customers" USING btree ("nfc_id");--> statement-breakpoint
+CREATE INDEX "customer_contacts_customer_id_idx" ON "customer_contacts" USING btree ("customer_id");
+--> statement-breakpoint
+INSERT INTO "privilege_keys" ("code", "label", "sort_order") VALUES
+	('CONFIGURATION.CUSTOMER', 'Customers', 5);