feat(interfaces): add API request/response interfaces

Created new typescript interfaces for API. They include IApiRegisterReq, IApiLoginReq, IAbstractApiResponse, IApiRegisterRes, and IApiLoginRes. These interfaces will be used to properly structure the data for API requests and responses, thus enhancing type safety and maintainability.

src/interfaces/api.interface.ts

@@ -0,0 +1,36 @@
+import {IUserData} from "@/interfaces/userdata.interface";
+
+// -----   Request    -----
+
+export interface IApiRegisterReq {
+	firstName: string;
+	lastName: string;
+  pseudo: string;
+  city: string;
+  email: string;
+  password: string;
+  age: number;
+}
+
+export interface IApiLoginReq {
+	email: string;
+	password: string;
+}
+
+
+// -----   Response   -----
+
+export interface IAbstractApiResponse {
+	message?: Array<string>;
+	error?: string;
+	statusCode?: number
+}
+
+export interface IApiRegisterRes extends IAbstractApiResponse {
+	access_token?: string;
+	user?: IUserData
+}
+
+export interface IApiLoginRes extends IAbstractApiResponse {
+	access_token?: string
+}