chore: utm (#2180)

web/models/common.ts

@@ -251,3 +251,11 @@ export type ModerationService = (
     text: string
   }
 ) => Promise<ModerateResponse>
+
+export type Utm = {
+  utm_source?: string
+  utm_medium?: string
+  utm_campaign?: string
+  utm_term?: string
+  utm_content?: string
+}