Fill acitivites from various activities; Fixes #972

src/model/user/regular.rs

@@ -1,5 +1,8 @@
 use super::User;
-use crate::{model::mail::Mail, special_user};
+use crate::{
+    model::{activity::ActivityBuilder, mail::Mail},
+    special_user,
+};
 use rocket::async_trait;
 use sqlx::SqlitePool;
 
@@ -43,6 +46,11 @@ ASKÖ Ruderverein Donau Linz", self.name),
             smtp_pw,
         ).await?;
 
+        ActivityBuilder::new(&format!("Willkommensmail für {self} wurde an {mail} verschickt (Handbuch, Signal-Gruppe, App-Info, Fingerprint, WLAN)."))
+                .relevant_for_user(&self)
+                .save(db)
+                .await;
+
         Ok(())
     }
 }