namespace sts -> namespace ams

namespace sts::ams -> ams::exosphere, ams::.

This is to facilitate future use of ams:: namespace code in
mesosphere, as we'll want to include ams::util, ams::result, ams::svc...

stratosphere/ams_mitm/source/set_mitm/setsys_settings_items.cpp

@@ -35,7 +35,7 @@ struct SettingsItemValue {
 std::map<std::string, SettingsItemValue> g_settings_items;
 
 static bool g_threw_fatal = false;
-static sts::os::Thread g_fatal_thread;
+static ams::os::Thread g_fatal_thread;
 
 static void FatalThreadFunc(void *arg) {
     svcSleepThread(5000000000ULL);