pgl: Reimplement the pgl sysmodule (#896)

* pgl: add skeleton folder to stratosphere

* pgl: Add service interface for IShellInterface

* pgl: begin skeletoning shell service, implement two commands.

* pgl: Implement three more commands.

* pgl: implement bool tracking commands

* pgl: Implement TriggerApplicationSnapShotDumper

* pgl: implement InitializeProcessControlTask

* pgl: Implement pgl::srv::Initialize

* pgl: Implement main()

* pgl: Implement (Get)ShellEventObserver

* pgl: implement LaunchProgramFromHost, GetHostContentMetaInfo

* pgl: Implement ProcessControlTask

* settings: fix duplicate object name

* pgl: fix minor bugs in impl

libraries/libstratosphere/source/diag/diag_assertion_impl.cpp

@@ -44,7 +44,7 @@ namespace ams::diag {
         inline void DebugLog(const char *format, ...) __attribute__((format(printf, 1, 2)));
 
 #ifdef AMS_ENABLE_DEBUG_PRINT
-        os::Mutex g_debug_log_lock;
+        os::Mutex g_debug_log_lock(true);
         char g_debug_buffer[0x400];
 
         void DebugLogImpl(const char *format, ::std::va_list vl) {