Improved tets and added PUT route for user acc

prisma/migrations/20230129213325_user_email_unique/migration.sql

@@ -0,0 +1,8 @@
+/*
+  Warnings:
+
+  - A unique constraint covering the columns `[email]` on the table `User` will be added. If there are existing duplicate values, this will fail.
+
+*/
+-- CreateIndex
+CREATE UNIQUE INDEX `User_email_key` ON `User`(`email`);

prisma/schema.prisma

@@ -9,7 +9,7 @@ datasource db {
 
 model User {
   id           Int        @id @default(autoincrement())
-  email        String
+  email        String     @unique
   password     String
   name         String
   picture_path String