refactor user accounts structure

prisma/schema/shared/guilds.prisma

@@ -0,0 +1,13 @@
+model Guild {
+  id   String  @id @default(uuid())
+  name String
+  code String?
+
+  created_at DateTime @default(now()) @db.Timestamp(0)
+  updated_at DateTime @updatedAt() @db.Timestamp(0)
+
+  business_activities BusinessActivity[]
+  good_categories     GoodCategory[]
+
+  @@map("guilds")
+}