Add config to exclude users

.env.example

@@ -1 +1,2 @@
 REGISTRATION_SHARED_SECRET='look in your synapses homeserver.yaml'
+EXCLUDED_USERS='rocket.cat' # Comma-separated list

src/app.ts

@@ -44,10 +44,7 @@ function loadRcExport(entity: Entities): Promise<void> {
         // Check for exclusion
         if (
           rcUser.roles.some((e) => ['app', 'bot'].includes(e)) ||
-          [
-            'rocket.cat',
-            '5kdLWNTys3u2MhB2H', // verdiadmin
-          ].includes(rcUser._id)
+          (process.env.EXCLUDED_USERS || '').split(',').includes(rcUser._id)
         ) {
           log.debug('User excluded. Skipping.')
           break