service: refactor server architecture

Converts services to have their own processes

src/core/hle/service/ldr/ldr.h

@@ -7,13 +7,8 @@ namespace Core {
 class System;
 }
 
-namespace Service::SM {
-class ServiceManager;
-}
-
 namespace Service::LDR {
 
-/// Registers all LDR services with the specified service manager.
-void InstallInterfaces(SM::ServiceManager& sm, Core::System& system);
+void LoopProcess(Core::System& system);
 
 } // namespace Service::LDR