fix: add firstName and lastName to user model (#473)

* fix: add firstname and lastanme to user model

* fix: avoid undefined in displayName resolve field

* fix: user firstName and lastName instead of firstname lastname

* fix: person table proper naming firstName lastName

* fix: migrate front with firstName and lastName

* fix: make front-graphql-generate not working

server/src/core/@generated/user/user-create-without-comments.input.ts

@@ -17,8 +17,16 @@ export class UserCreateWithoutCommentsInput {
 
     @Field(() => String, {nullable:false})
     @Validator.IsString()
+    firstName!: string;
+
+    @Field(() => String, {nullable:false})
+    @Validator.IsString()
+    lastName!: string;
+
+    @Field(() => String, {nullable:true})
+    @Validator.IsString()
     @Validator.IsOptional()
-    displayName!: string;
+    displayName?: string;
 
     @Field(() => String, {nullable:false})
     @Validator.IsEmail()