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/Editor/GameEngine.cpp

@@ -35,7 +35,6 @@
 
 // CryCommon
 #include <CryCommon/INavigationSystem.h>
-#include <CryCommon/LyShine/ILyShine.h>
 #include <CryCommon/MainThreadRenderRequestBus.h>
 
 // Editor
@@ -595,13 +594,6 @@ void CGameEngine::SwitchToInEditor()
     // Enable accelerators.
     GetIEditor()->EnableAcceleratos(true);
 
-
-    // reset UI system
-    if (gEnv->pLyShine)
-    {
-        gEnv->pLyShine->Reset();
-    }
-
     // [Anton] - order changed, see comments for CGameEngine::SetSimulationMode
     //! Send event to switch out of game.
     GetIEditor()->GetObjectManager()->SendEvent(EVENT_OUTOFGAME);