refactor(niri): declared constructor

Move constructor from hpp to cpp to align with other modules

Signed-off-by: Austin Horstman <khaneliman12@gmail.com>

include/modules/niri/backend.hpp

@@ -17,7 +17,7 @@ class EventHandler {
 
 class IPC {
  public:
-  IPC() { startIPC(); }
+  IPC();
 
   void registerForIPC(const std::string& ev, EventHandler* ev_handler);
   void unregisterForIPC(EventHandler* handler);

src/modules/niri/backend.cpp

@@ -20,6 +20,8 @@
 
 namespace waybar::modules::niri {
 
+IPC::IPC() { startIPC(); }
+
 int IPC::connectToSocket() {
   const char* socket_path = getenv("NIRI_SOCKET");