draft status pages

src/app/browser/window/tab/item/page/content/status/error.rs

@@ -0,0 +1,15 @@
+use adw::StatusPage;
+
+pub struct Error {
+    gobject: StatusPage,
+}
+
+impl Error {
+    pub fn new(title: &str, description: &str) -> StatusPage {
+        StatusPage::builder()
+            .description(description)
+            .icon_name("dialog-error-symbolic")
+            .title(title)
+            .build()
+    }
+}