feat: create error classes

Author: cgabrieu

src/controllers/usersController.ts

@@ -1,3 +1,5 @@
 import { Request, Response, NextFunction } from 'express';
 
-async function postUser(req: Request, res: Response, next: N);
+export async function postUser(req: Request, res: Response, next: NextFunction) {
+    
+}

src/errors/Conflict.ts

@@ -0,0 +1,6 @@
+export default class Conflict extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = 'Conflict';
+  }
+}

src/errors/NotFound.ts

@@ -0,0 +1,6 @@
+export default class NotFound extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = 'NotFound';
+  }
+}