feat(services): add new BrandService with createBrand function

This commit introduces the new file `brand.service.ts` under services. Specifically, it implements the `createBrand` method which handles the creation of a new brand instance in the database if there's no existing brand with the same slug name. The function returns a promise containing the operation result. A UUID is also generated as `brandId`, and several logs will be recorded in different situations.

Issue: #13
Signed-off-by: Mathis <yidhra@tuta.io>

src/services/brand.service.ts

@@ -0,0 +1,41 @@
+import IDbBrand from "@interfaces/database/IDbBrand";
+import MysqlService from "@services/mysql.service";
+import {Logger} from "tslog";
+import { v4 as uuidv4 } from 'uuid';
+
+const DbHandler = new MysqlService.Handler('BrandService')
+const logger = new Logger({name: 'BrandService'})
+
+//SEC Blob validation
+/**
+ * Creates a brand in the database with the given data.
+ *
+ * @param {IDbBrand} data - The data of the brand to be created.
+ * @return {Promise<unknown>} A promise that resolves to the result of the operation.
+ */
+async function createBrand(data: IDbBrand): Promise<unknown> {
+	const doesExist = await MysqlService.Brand.getBySlug(DbHandler, data.slug_name);
+	if (doesExist) {
+		logger.error(`Brand already exists (${data.slug_name})`)
+		return {error: 'exist'}
+	}
+	const brandId = uuidv4();
+  const createdBrand = await MysqlService.Brand.insert(DbHandler, {
+		id: brandId,
+		slug_name: `${data.slug_name}`,
+		display_name: `${data.display_name}`,
+		image_blob: data.image_blob
+	});
+  if (createdBrand) {
+    logger.info(`Brand created successfully (${data.slug_name})`);
+    return { success: true, brand: createdBrand };
+  }
+    logger.error(`Failed to create brand (${data.slug_name})`);
+    return { error: 'failed' };
+}
+
+const BrandService = {
+	create: createBrand
+}
+
+export default BrandService;