Remove legacy renderer dependencies in LyShine and move LyShine headers to gem (#6049)

* Remove CryRenderer dependencies

Signed-off-by: abrmich <abrmich@amazon.com>

* Fix non-unity compile error

Signed-off-by: abrmich <abrmich@amazon.com>

* Remove ITexture.h reference

Signed-off-by: abrmich <abrmich@amazon.com>

* Simple file moves from CryCommon to LyShine Gem

Signed-off-by: abrmich <abrmich@amazon.com>

* More simple file moves from CryCommon to LyShine Gem

Signed-off-by: abrmich <abrmich@amazon.com>

* Move more headers from CryCommon to LyShine Gem

Signed-off-by: abrmich <abrmich@amazon.com>

* Add LyShine gem module as a build dependency to fix compile error in some gems

Signed-off-by: abrmich <abrmich@amazon.com>

Code/Legacy/CrySystem/SystemInit.cpp

@@ -52,7 +52,6 @@
 #include <AzFramework/Archive/ArchiveFileIO.h>
 
 #include <LoadScreenBus.h>
-#include <LyShine/Bus/UiSystemBus.h>
 #include <AzFramework/Logging/MissingAssetLogger.h>
 #include <AzFramework/Platform/PlatformDefaults.h>
 #include <AzCore/Interface/Interface.h>
@@ -77,7 +76,6 @@
 #include <IAudioSystem.h>
 #include <ICmdLine.h>
 #include <IProcess.h>
-#include <LyShine/ILyShine.h>
 
 #include <AzFramework/Archive/Archive.h>
 #include "XConsole.h"
@@ -1105,11 +1103,6 @@ AZ_POP_DISABLE_WARNING
 
         InlineInitializationProcessing("CSystem::Init Level System");
 
-        if (m_env.pLyShine)
-        {
-            m_env.pLyShine->PostInit();
-        }
-
         InlineInitializationProcessing("CSystem::Init InitLmbrAWS");
 
         // Az to Cry console binding