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-front/src/modules/settings/integrations/database-connection/components/SettingsIntegrationDatabaseConnectionForm.tsx

@@ -8,7 +8,7 @@ export const settingsIntegrationPostgreSQLConnectionFormSchema = z.object({
   dbname: z.string().min(1),
   host: z.string().min(1),
   port: z.preprocess((val) => parseInt(val as string), z.number().positive()),
-  username: z.string().min(1),
+  user: z.string().min(1),
   password: z.string().min(1),
   schema: z.string().min(1),
 });
@@ -52,9 +52,9 @@ export const SettingsIntegrationPostgreSQLConnectionForm = ({
         { name: 'host' as const, label: 'Host', placeholder: 'host' },
         { name: 'port' as const, label: 'Port', placeholder: '5432' },
         {
-          name: 'username' as const,
-          label: 'Username',
-          placeholder: 'username',
+          name: 'user' as const,
+          label: 'User',
+          placeholder: 'user',
         },
         {
           name: 'password' as const,