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/libstratosphere/source/pm/pm_shell_api.cpp

@@ -18,7 +18,7 @@
 #include <stratosphere.hpp>
 #include <stratosphere/pm.hpp>
 
-namespace sts::pm::shell {
+namespace ams::pm::shell {
 
     /* Shell API. */
     Result WEAK LaunchTitle(os::ProcessId *out_process_id, const ncm::TitleLocation &loc, u32 launch_flags) {