feat(backend): forgot password (#250)

* feat(backend): forgot password

* feat: apply feedback from code review

* chore(auth): validate the minimum length of 'newPassword'

* chore(auth): make token has an expiry of 1 hour

* chore: rename all occurrences of 'code' to 'token'

* chore(backend): provide value on nanoIdGen method

apps/server/src/core/auth/dto/forgot-password.dto.ts

@@ -0,0 +1,16 @@
+import { IsEmail, IsNotEmpty, IsOptional, IsString, MinLength } from 'class-validator';
+
+export class ForgotPasswordDto {
+  @IsNotEmpty()
+  @IsEmail()
+  email: string;
+
+  @IsOptional()
+  @IsString()
+  token: string;
+
+  @IsOptional()
+  @IsString()
+  @MinLength(8)
+  newPassword: string;
+}