create own default_destination table to remove clutter; Fixes #646

src/model/distance.rs

@@ -0,0 +1,21 @@
+use serde::Serialize;
+use sqlx::{FromRow, SqlitePool};
+
+#[derive(FromRow, Serialize, Clone, Debug)]
+pub struct Distance {
+    pub id: i64,
+    pub destination: String,
+    pub distance_in_km: i64,
+}
+
+impl Distance {
+    pub async fn all(db: &SqlitePool) -> Vec<Self> {
+        sqlx::query_as!(
+            Self,
+            "SELECT id, destination, distance_in_km FROM distance;"
+        )
+        .fetch_all(db)
+        .await
+        .unwrap()
+    }
+}