feat: Added basic toast popups

lib/libimhex/source/ui/popup.cpp

@@ -9,5 +9,12 @@ namespace hex::impl {
         return openPopups;
     }
 
+    std::mutex& PopupBase::getMutex() {
+        static std::mutex mutex;
+
+        return mutex;
+    }
+
+
 
 }

lib/libimhex/source/ui/toast.cpp

@@ -0,0 +1,17 @@
+#include <hex/ui/toast.hpp>
+
+namespace hex::impl {
+
+    [[nodiscard]] std::list<std::unique_ptr<ToastBase>> &ToastBase::getQueuedToasts() {
+        static std::list<std::unique_ptr<ToastBase>> queuedToasts;
+
+        return queuedToasts;
+    }
+
+    std::mutex& ToastBase::getMutex() {
+        static std::mutex mutex;
+
+        return mutex;
+    }
+
+}