Stratosphere: Add Launch Queue to Loader

Modified from RE done by @ogniK5377

stratosphere/loader/source/ldr_launch_queue.hpp

@@ -0,0 +1,19 @@
+#pragma once
+#include <switch.h>
+
+#define LAUNCH_QUEUE_SIZE (10)
+#define LAUNCH_QUEUE_FULL (-1)
+
+#define LAUNCH_QUEUE_ARG_SIZE_MAX (0x8000)
+
+typedef struct launch_item_t {
+    u64 tid;
+    u64 arg_size;
+    char args[LAUNCH_QUEUE_ARG_SIZE_MAX];
+} launch_item_t;
+
+Result launch_queue_add(launch_item_t item);
+int launch_queue_get_index(u64 TID);
+int launch_queue_get_free_index(u64 TID = 0);
+bool launch_queue_contains(u64 TID);
+void launch_queue_clear();