Remove unnecessary egui dependency, use eframe::egui re-exports instead

src/app.rs

@@ -7,5 +7,5 @@ impl App {
 }
 
 impl eframe::App for App {
-    fn update(&mut self, _ctx: &egui::Context, _frame: &mut eframe::Frame) {}
+    fn update(&mut self, _ctx: &eframe::egui::Context, _frame: &mut eframe::Frame) {}
 }

src/font.rs

@@ -1 +1 @@
-pub fn setup_fonts(_ctx: &egui::Context) {}
+pub fn setup_fonts(_ctx: &eframe::egui::Context) {}