admin: added list of users

crates/users/src/database.rs

@@ -108,6 +108,14 @@ impl User {
             .map(Self::from))
     }
 
+    pub async fn get_all(conn: impl SqliteExecutor<'_>) -> Result<Vec<Self>, Error> {
+        Ok(DatabaseUsers::get_all(conn)
+            .await?
+            .into_iter()
+            .map(Self::from)
+            .collect::<Vec<_>>())
+    }
+
     pub async fn set_username(
         &self,
         conn: impl SqliteExecutor<'_>,