feat: api and types for the payment feature

src/features/pay/api.ts

+import { axiosInstance } from "@/axios";
+import type { DjangoPaginated, PaymentType } from "./types";
+
+export const getPaymentTypes = () => {
+	return axiosInstance.get<DjangoPaginated<Record<string, PaymentType>>>("/operateur/");
+};

src/features/pay/types.ts

+export type PaymentTypeCode = "OM" | "FLOOZ" | "MTN" | "WAVE" | "CB";
+
+export interface PaymentType {
+	reference: number;
+	nom: string;
+	description: string;
+	code: PaymentTypeCode;
+	etat: boolean;
+	type_operateur: string;
+}
+
+export interface DjangoPaginated<T> {
+	count: number;
+	next: string | null;
+	previous: string | null;
+	results: T;
+}
+
+export interface Merchant {
+	marchand_id: string;
+	nom: string;
+	code: string;
+	adresse: string;
+	url_succes: string;
+	url_echec: string;
+	entreprise: number;
+	user: number;
+}
+
+export interface IuserInformations {
+	username: string;
+	email: string;
+	first_name: string;
+	last_name: string;
+	marchand: Merchant;
+}