feat(messenger): store and serve telegram profiles

prisma/migrations/0005_add_messenger_profile_fields/migration.sql

@@ -0,0 +1,6 @@
+-- AlterTable
+ALTER TABLE "MessengerConnection" ADD COLUMN     "avatarFileId" TEXT,
+ADD COLUMN     "avatarFileUniqueId" TEXT,
+ADD COLUMN     "displayName" TEXT,
+ADD COLUMN     "username" TEXT;
+

prisma/schema.prisma

@@ -155,6 +155,10 @@ model MessengerConnection {
   user         User          @relation(fields: [userId], references: [id])
   type         MessengerType
   channelId    String
+  displayName  String?
+  username     String?
+  avatarFileId String?
+  avatarFileUniqueId String?
   isActive     Boolean       @default(true)
   createdAt    DateTime      @default(now())