refactor: Make ChatterinoBadges less of a singleton (#5103)

mocks/include/mocks/ChatterinoBadges.hpp

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "providers/chatterino/ChatterinoBadges.hpp"
+
+namespace chatterino::mock {
+
+class ChatterinoBadges : public IChatterinoBadges
+{
+public:
+    std::optional<EmotePtr> getBadge(const UserId &id) override
+    {
+        (void)id;
+        return std::nullopt;
+    }
+};
+
+}  // namespace chatterino::mock

mocks/include/mocks/EmptyApplication.hpp

@@ -134,7 +134,7 @@ public:
         return nullptr;
     }
 
-    ChatterinoBadges *getChatterinoBadges() override
+    IChatterinoBadges *getChatterinoBadges() override
     {
         assert(false && "EmptyApplication::getChatterinoBadges was called "
                         "without being initialized");