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/workspace/resolvers/workspace-member.resolver.ts

@@ -1,5 +1,5 @@
-import * as TypeGraphQL from '@nestjs/graphql';
+import { Resolver } from '@nestjs/graphql';
 import { WorkspaceMember } from '../../@generated/workspace-member/workspace-member.model';
 
-@TypeGraphQL.Resolver(() => WorkspaceMember)
+@Resolver(() => WorkspaceMember)
 export class WorkspaceMemberResolver {}