Add custom pm sysmodule

sysmodules/pm/source/task_runner.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <3ds/types.h>
+#include <3ds/synchronization.h>
+
+typedef struct TaskRunner {
+    LightEvent readyEvent;
+    LightEvent parametersSetEvent;
+    void (*task)(void *argdata);
+    u8 argStorage[0x40];
+} TaskRunner;
+
+extern TaskRunner g_taskRunner;
+
+void TaskRunner_Init(void);
+void TaskRunner_RunTask(void (*task)(void *argdata), void *argdata, size_t argsize);
+/// Thread function
+void TaskRunner_HandleTasks(void *p);