fix: store IPC file in application directory (#5226)

src/util/IpcQueue.hpp

@@ -6,8 +6,16 @@
 class QByteArray;
 class QString;
 
+namespace chatterino {
+
+class Paths;
+
+}  // namespace chatterino
+
 namespace chatterino::ipc {
 
+void initPaths(const Paths *paths);
+
 void sendMessage(const char *name, const QByteArray &data);
 
 class IpcQueuePrivate;