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/QueryMode.ts

@@ -0,0 +1,10 @@
+import * as TypeGraphQL from "type-graphql";
+
+export enum QueryMode {
+  "default" = "default",
+  insensitive = "insensitive"
+}
+TypeGraphQL.registerEnumType(QueryMode, {
+  name: "QueryMode",
+  description: undefined,
+});