ui: add some margin to chrome sidebar

Looks a bit better

crates/notedeck_chrome/src/chrome.rs

@@ -268,6 +268,9 @@ impl Chrome {
         // minimize/close buttons
         if cfg!(target_os = "macos") {
             ui.add_space(28.0);
+        } else {
+            // we still want *some* padding so that it aligns with the + button regardless
+            ui.add_space(notedeck_ui::constants::FRAME_MARGIN.into());
         }
 
         if ui.add(expand_side_panel_button()).clicked() {

crates/notedeck_columns/src/ui/side_panel.rs

@@ -66,7 +66,8 @@ impl<'a> DesktopSidePanel<'a> {
     }
 
     pub fn show(&mut self, ui: &mut egui::Ui) -> Option<SidePanelResponse> {
-        let frame = egui::Frame::new().inner_margin(Margin::same(8));
+        let frame =
+            egui::Frame::new().inner_margin(Margin::same(notedeck_ui::constants::FRAME_MARGIN));
 
         if !ui.visuals().dark_mode {
             let rect = ui.available_rect_before_wrap();

crates/notedeck_ui/src/constants.rs

@@ -0,0 +1,2 @@
+/// Default frame margin
+pub const FRAME_MARGIN: i8 = 8;

crates/notedeck_ui/src/lib.rs

@@ -1,5 +1,6 @@
 mod anim;
 pub mod colors;
+pub mod constants;
 pub mod gif;
 pub mod icons;
 pub mod images;