feat: settings application architecture

src/page/desktop/appearance.rs

@@ -0,0 +1,24 @@
+// Copyright 2023 System76 <info@system76.com>
+// SPDX-License-Identifier: GPL-3.0-only
+
+use crate::page::{self, section, Content, Section};
+use slotmap::SlotMap;
+
+pub struct Page;
+
+impl page::Page for Page {
+    type Model = super::Model;
+
+    const PERSISTENT_ID: &'static str = "appearance";
+
+    fn page() -> page::Meta {
+        page::Meta::default()
+            .title(fl!("appearance"))
+            .description(fl!("appearance", "desc"))
+            .icon_name("preferences-pop-desktop-appearance-symbolic")
+    }
+
+    fn content(sections: &mut SlotMap<section::Entity, Section>) -> Option<Content> {
+        Some(vec![sections.insert(Section::new())])
+    }
+}