ams: support building unit test programs on windows/linux/macos

libraries/libstratosphere/source/ldr/ldr_ams.os.horizon.h

@@ -0,0 +1,27 @@
+/**
+ * @file ldr_ams.h
+ * @brief Loader (ldr:*) IPC wrapper for Atmosphere extensions.
+ * @author SciresM
+ * @copyright libnx Authors
+ */
+#pragma once
+#include <switch.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    u64 keys_down;
+    u64 flags;
+} CfgOverrideStatus;
+
+Result ldrPmAtmosphereHasLaunchedBootProgram(bool *out, u64 program_id);
+Result ldrDmntAtmosphereHasLaunchedBootProgram(bool *out, u64 program_id);
+
+Result ldrPmAtmosphereGetProgramInfo(LoaderProgramInfo *out, CfgOverrideStatus *out_status, const NcmProgramLocation *loc);
+Result ldrPmAtmospherePinProgram(u64 *out, const NcmProgramLocation *loc, const CfgOverrideStatus *status);
+
+#ifdef __cplusplus
+}
+#endif