feat(services): add brand insert method in mysql service

- Adjusted import syntax for IDbCategory interface
- Imported IDbBrand from database interfaces
- Added a new `insert` method in Brand object in MysqlHandler to insert brand data into the database. The method resolves with execution of SQL command and rejects on error or invalid ID.

Issue: #5
Signed-off-by: Mathis <yidhra@tuta.io>

src/interfaces/requests/IReqLogin.ts

@@ -0,0 +1,4 @@
+export interface IReqLogin {
+	username: string;
+	password: string;
+}

src/interfaces/requests/IReqRegister.ts

@@ -0,0 +1,8 @@
+export interface IReqRegister {
+	username: string;
+	displayName: string;
+	firstName: string;
+	lastName: string;
+	password: string;
+	gdpr?: boolean;
+}

src/services/mysql.service.ts

@@ -1,6 +1,7 @@
-import type IDbCategory from "@interfaces/database/IDbCategory";
+import type {IDbCategory} from "@interfaces/database/IDbCategory";
 import type {IDbModel} from "@interfaces/database/IDbModel";
 import type {IDbUser} from "@interfaces/database/IDbUser";
+import type {IDbBrand} from "@interfaces/database/IDbBrand";
 import mysql, {type Connection, type ConnectionOptions} from 'mysql2';
 import {Logger} from "tslog";
 
@@ -269,7 +270,28 @@ const MySqlService = {
       });
 		}
 	},
+	Brand: {
+		insert(handler: MysqlHandler, data: IDbBrand) {
+			return new Promise((resolve, reject) => {
+				if (!data.id) return reject('Id is undefined');
+				if (data.id.length !== 36) return reject('Id invalid');
 
+				const _sql = "INSERT INTO `brands`(`id`,`display_name`, `slug_name`, `image_blob`) VALUES (?, ?, ?, ?)"
+				const _values = [
+					data.id,
+					data.display_name,
+					data.slug_name,
+					data.image_blob
+				]
+				try {
+					resolve(handler.execute(_sql, _values))
+				} catch (err: unknown) {
+					reject(err as Error);
+				}
+			})
+		}
+
+	},
 	Model: {
 
 		/**
@@ -357,7 +379,7 @@ const MySqlService = {
 				if (!data.id) return reject('Id is undefined');
 				if (data.id.length !== 36) return reject('Id invalid');
 
-				const _sql = "INSERT INTO `categorys`(`id`,`slug_name`, `display_name`) VALUES (?, ?, ?)"
+				const _sql = "INSERT INTO `categories`(`id`,`slug_name`, `display_name`) VALUES (?, ?, ?)"
 				const _values = [
 					data.id,
 					data.slug_name,