Added button to refresh themes and catpacks

Signed-off-by: Trial97 <alexandru.tripon97@gmail.com>

launcher/ui/themes/ThemeManager.cpp

@@ -313,3 +313,13 @@ void ThemeManager::initializeCatPacks()
         }
     }
 }
+
+void ThemeManager::refresh()
+{
+    m_themes.clear();
+    m_icons.clear();
+    m_catPacks.clear();
+
+    initializeThemes();
+    initializeCatPacks();
+};

launcher/ui/themes/ThemeManager.h

@@ -55,6 +55,8 @@ class ThemeManager {
     QString getCatPack(QString catName = "");
     QList<CatPack*> getValidCatPacks();
 
+    void refresh();
+
    private:
     std::map<QString, std::unique_ptr<ITheme>> m_themes;
     std::map<QString, IconTheme> m_icons;