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/metadata-modules/remote-server/remote-server.module.ts

@@ -1,7 +1,7 @@
 import { Module } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
 
-import { ForeignDataWrapperQueryFactory } from 'src/engine/api/graphql/workspace-query-builder/factories/foreign-data-wrapper-query.factory';
+import { ForeignDataWrapperServerQueryFactory } from 'src/engine/api/graphql/workspace-query-builder/factories/foreign-data-wrapper-server-query.factory';
 import { FeatureFlagEntity } from 'src/engine/core-modules/feature-flag/feature-flag.entity';
 import { RemoteServerEntity } from 'src/engine/metadata-modules/remote-server/remote-server.entity';
 import { RemoteServerResolver } from 'src/engine/metadata-modules/remote-server/remote-server.resolver';
@@ -19,7 +19,7 @@ import { WorkspaceDataSourceModule } from 'src/engine/workspace-datasource/works
   providers: [
     RemoteServerService,
     RemoteServerResolver,
-    ForeignDataWrapperQueryFactory,
+    ForeignDataWrapperServerQueryFactory,
   ],
 })
 export class RemoteServerModule {}