Add scroll area to tile db

src/tiles/tiledb_edit_ui.rs

@@ -9,6 +9,9 @@ pub fn tiledb_edit_ui(ctx: &egui::Context, tile_db: &mut TileDb) {
     egui::Window::new("Tiledb editor").show(ctx, |ui| {
         ui.label(format!("Number of tile defs: {}", tile_db.db.len()));
         ui.separator();
+        egui::ScrollArea::vertical()
+            .max_height(400.0)
+            .show(ui, |ui| {
                 for (i, def) in tile_db.db.iter_mut().enumerate() {
                     ui.label(i.to_string());
                     match &mut def.light {
@@ -28,6 +31,7 @@ pub fn tiledb_edit_ui(ctx: &egui::Context, tile_db: &mut TileDb) {
                         }
                     }
                 }
+            });
         ui.separator();
         if ui.button("Add new default").clicked() {
             tile_db.db.push(super::TileDef::default());