feat: add findAll and findUnique resolver for universal objects (#1576)

* wip: refacto and start creating custom resolver

* feat: findMany & findUnique of a custom entity

* feat: wip pagination

* feat: initial metadata migration

* feat: universal findAll with pagination

* fix: clean small stuff in pagination

* fix: test

* fix: miss file

* feat: rename custom into universal

* feat: create metadata schema in default database

---------

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

server/src/utils/pagination/interfaces/connection-arguments.interface.ts

@@ -0,0 +1,15 @@
+export interface IConnectionArguments {
+  first?: number | null;
+  after?: string | null;
+  last?: number | null;
+  before?: string | null;
+}
+
+export type ConnectionArgumentsUnion =
+  | ForwardPaginationArguments
+  | BackwardPaginationArguments
+  | NoPaginationArguments;
+
+export type ForwardPaginationArguments = { first: number; after?: string };
+export type BackwardPaginationArguments = { last: number; before?: string };
+export type NoPaginationArguments = Record<string, unknown>;