update includes

Makefile

@@ -1,7 +1,7 @@
 # Define compiler and flags
 CXX = g++
-CXXFLAGS = `pkg-config --cflags gtkmm-4.0`
-LDFLAGS = `pkg-config --libs gtkmm-4.0`
+CXXFLAGS = `pkg-config --cflags gtkmm-4.0 glibmm-2.68`
+LDFLAGS = `pkg-config --libs gtkmm-4.0 glibmm-2.68`
 
 # Define target executable and source files
 TARGET = bin/Yoda

src/app/browser.h

@@ -3,6 +3,7 @@
 
 #include <glibmm/i18n.h>
 
+#include <gtkmm/application.h>
 #include <gtkmm/applicationwindow.h>
 #include <gtkmm/headerbar.h>
 #include <gtkmm/menubutton.h>

src/main.h

@@ -1,5 +1,3 @@
-#include <gtkmm/application.h>
-
 #include "app/browser.h"
 
 const Glib::ustring APPLICATION_ID = "io.github.yggverse.Yoda";