Rewrite using Relm4

Yes, this is a monster commit but at this stage I'm the only one working
on this project anyway. Further commits will follow Best Practises™
again.

src/ui/components/media_details/series_details.rs

@@ -0,0 +1,41 @@
+use gtk4::prelude::{BoxExt, OrientableExt, WidgetExt};
+use gtk4::{Label, Orientation};
+use relm4::{ComponentParts, ComponentSender, RelmWidgetExt, SimpleComponent, component};
+
+use crate::views::overview::SeriesOverview;
+
+
+
+pub struct SeriesDetails {
+  series_overview: SeriesOverview,
+}
+
+#[component(pub)]
+impl SimpleComponent for SeriesDetails {
+  type Init = SeriesOverview;
+  type Input = ();
+  type Output = ();
+
+  view! {
+    gtk4::Box {
+      set_orientation: Orientation::Vertical,
+      set_spacing: 40,
+      set_margin_all: 100,
+
+      Label {
+        set_css_classes: &["title-1"],
+        set_label: model.series_overview.name.as_str(),
+      }
+    }
+  }
+
+  fn init(
+    series_overview: SeriesOverview,
+    _root: gtk4::Box,
+    _sender: ComponentSender<SeriesDetails>,
+  ) -> ComponentParts<SeriesDetails> {
+    let model = SeriesDetails { series_overview };
+    let widgets = view_output!();
+    ComponentParts { model, widgets }
+  }
+}