Build stripe integration on backend side (#5246)

Adding stripe integration by making the server logic independent of the
input fields:
- query factories (remote server, foreign data wrapper, foreign table)
to loop on fields and values without hardcoding the names of the fields
- adding stripe input and type
- add the logic to handle static schema. Simply creating a big object to
store into the server

Additional work:
- rename username field to user. This is the input intended for postgres
user mapping and we now need a matching by name

---------

Co-authored-by: Thomas Trompette <thomast@twenty.com>

packages/twenty-server/src/engine/workspace-manager/workspace-sync-metadata/commands/add-standard-id.command.ts

@@ -59,6 +59,7 @@ export class AddStandardIdCommand extends CommandRunner {
             IS_AIRTABLE_INTEGRATION_ENABLED: true,
             IS_POSTGRESQL_INTEGRATION_ENABLED: true,
             IS_MULTI_SELECT_ENABLED: false,
+            IS_STRIPE_INTEGRATION_ENABLED: false,
           },
         );
       const standardFieldMetadataCollection = this.standardFieldFactory.create(
@@ -74,6 +75,7 @@ export class AddStandardIdCommand extends CommandRunner {
           IS_AIRTABLE_INTEGRATION_ENABLED: true,
           IS_POSTGRESQL_INTEGRATION_ENABLED: true,
           IS_MULTI_SELECT_ENABLED: false,
+          IS_STRIPE_INTEGRATION_ENABLED: false,
         },
       );