Lucas/t 231 timebox i can create a company at the same time im creating (#140)

This PR is a bit messy:

adding graphql schema
adding create company creation on company select on People page
some frontend refactoring to be continued

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Co-authored-by: Charles Bochet <charles@twenty.com>

server/src/api/graphql/enums/PersonScalarFieldEnum.ts

@@ -0,0 +1,19 @@
+import * as TypeGraphQL from "type-graphql";
+
+export enum PersonScalarFieldEnum {
+  id = "id",
+  createdAt = "createdAt",
+  updatedAt = "updatedAt",
+  deletedAt = "deletedAt",
+  firstname = "firstname",
+  lastname = "lastname",
+  email = "email",
+  phone = "phone",
+  city = "city",
+  companyId = "companyId",
+  workspaceId = "workspaceId"
+}
+TypeGraphQL.registerEnumType(PersonScalarFieldEnum, {
+  name: "PersonScalarFieldEnum",
+  description: undefined,
+});