add preferences and macOS packaging

src/schema.rs

@@ -6,6 +6,15 @@ diesel::table! {
     }
 }
 
+diesel::table! {
+    preferences (id) {
+        id -> Integer,
+        selected_model -> Text,
+        dflash_enabled -> Bool,
+        idle_timeout_minutes -> Integer,
+    }
+}
+
 diesel::table! {
     sessions (id) {
         id -> Integer,
@@ -15,4 +24,4 @@ diesel::table! {
 }
 
 diesel::joinable!(sessions -> projects (project_id));
-diesel::allow_tables_to_appear_in_same_query!(projects, sessions);
+diesel::allow_tables_to_appear_in_same_query!(preferences, projects, sessions);