MdeModulePkg: Add TraceHubDebugSysTLib library

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4144

This Library provides API to dump Trace Hub message.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Guo Gua <gua.guo@intel.com>
Cc: Chan Laura <laura.chan@intel.com>
Cc: Prakashan Krishnadas Veliyathuparambil <krishnadas.veliyathuparambil.prakashan@intel.com>
Cc: K N Karthik <karthik.k.n@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Guo Gua <gua.guo@intel.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: K N Karthik <karthik.k.n@intel.com>
Reviewed-by: Chan Laura <laura.chan@intel.com>
Acked-by: Liming Gao <gaoliming@byosoft.com.cn>

MdeModulePkg/Library/TraceHubDebugSysTLib/Readme.md

@@ -0,0 +1,26 @@
+## Introduction of TrcaceHubDebugSysTLib ##
+TrcaceHubDebugSysTLib library is a top level library for dumping Trace Hub messages.
+It provides Trace Hub related APIs to dump Trace Hub message via MIPI SYS-T submodule.
+User need to properly configure following Trace Hub related PCDs and HOB.
+  (See MdeModulePkg.dec to get detailed definition for PCDs below)
+  - PcdTraceHubDebugLevel
+  - PcdEnableTraceHubDebugMsg
+  - PcdTraceHubDebugMmioAddress
+  (See TraceHubDebugInfoHob.h to get detailed definition for HOB below)
+  - gTraceHubDebugInfoHobGuid
+
+## BaseTraceHubDebugSysTLib.inf ##
+System prints Trace Hub message in SEC/PEI/DXE/SMM based on fixed PCDs.
+Only support single Trace Hub debug instance.
+
+## PeiTraceHubDebugSysTLib.inf ##
+System prints Trace Hub message in PEI based on fixed PCDs and HOB.
+System applies Trace Hub HOB once it detect gTraceHubDebugInfoHobGuid HOB.
+Trace Hub PCDs will be applied if no HOB exist.
+
+## DxeSmmTraceHubDebugSysTLib.inf ##
+System prints Trace Hub message in DXE/SMM based on fixed PCDs and HOB.
+Trace Hub PCDs will be applied if no HOB exist.
+
+## Note ##
+Trace Hub debug library not support DXE_RUNTIME_DRIVER type of module currently.