♻️ Major code restructuring

src/base/theme/basic.rs

@@ -0,0 +1,32 @@
+use crate::prelude::*;
+use crate::BaseHandle;
+
+#[derive(BaseHandle)]
+pub struct Basic;
+
+impl PackageTrait for Basic {
+    fn name(&self) -> L10n {
+        L10n::n("Basic")
+    }
+
+    fn theme(&self) -> Option<ThemeRef> {
+        Some(&Basic)
+    }
+}
+
+impl ThemeTrait for Basic {
+    fn after_prepare_body(&self, page: &mut Page) {
+        page.alter_favicon(Some(Favicon::new().with_icon("/base/favicon.ico")))
+            .alter_context(ContextOp::AddStyleSheet(
+                StyleSheet::at("/base/css/normalize.min.css")
+                    .with_version("8.0.1")
+                    .with_weight(-90),
+            ))
+            .alter_context(ContextOp::AddBaseAssets)
+            .alter_context(ContextOp::AddStyleSheet(
+                StyleSheet::at("/base/css/basic.css")
+                    .with_version("0.0.1")
+                    .with_weight(-90),
+            ));
+    }
+}