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

---------

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

server/src/api/graphql/models/Company.ts

@@ -0,0 +1,74 @@
+import * as TypeGraphQL from "type-graphql";
+import * as GraphQLScalars from "graphql-scalars";
+import { Prisma } from "@prisma/client";
+import { DecimalJSScalar } from "../scalars";
+import { Person } from "../models/Person";
+import { User } from "../models/User";
+import { Workspace } from "../models/Workspace";
+import { CompanyCount } from "../resolvers/outputs/CompanyCount";
+
+@TypeGraphQL.ObjectType("Company", {
+  isAbstract: true
+})
+export class Company {
+  @TypeGraphQL.Field(_type => String, {
+    nullable: false
+  })
+  id!: string;
+
+  @TypeGraphQL.Field(_type => Date, {
+    nullable: false
+  })
+  createdAt!: Date;
+
+  @TypeGraphQL.Field(_type => Date, {
+    nullable: false
+  })
+  updatedAt!: Date;
+
+  @TypeGraphQL.Field(_type => Date, {
+    nullable: true
+  })
+  deletedAt?: Date | null;
+
+  @TypeGraphQL.Field(_type => String, {
+    nullable: false
+  })
+  name!: string;
+
+  @TypeGraphQL.Field(_type => String, {
+    nullable: false
+  })
+  domainName!: string;
+
+  @TypeGraphQL.Field(_type => String, {
+    nullable: false
+  })
+  address!: string;
+
+  @TypeGraphQL.Field(_type => TypeGraphQL.Int, {
+    nullable: true
+  })
+  employees?: number | null;
+
+  @TypeGraphQL.Field(_type => String, {
+    nullable: true
+  })
+  accountOwnerId?: string | null;
+
+  accountOwner?: User | null;
+
+  people?: Person[];
+
+  @TypeGraphQL.Field(_type => String, {
+    nullable: false
+  })
+  workspaceId!: string;
+
+  workspace?: Workspace;
+
+  @TypeGraphQL.Field(_type => CompanyCount, {
+    nullable: true
+  })
+  _count?: CompanyCount | null;
+}