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

front/src/pages/people/People.tsx

@@ -63,8 +63,8 @@ export function People() {
     await insertPersonMutation({
       variables: {
         id: uuidv4(),
-        firstname: '',
-        lastname: '',
+        firstName: '',
+        lastName: '',
         email: '',
         phone: '',
         createdAt: new Date().toISOString(),