fix: allow tf_viewmodels_offset_override (with limits)

allow players to customize their viewmodel offset like in CSGO

ref: ValveSoftware/Source-1-Games#2484

src/game/shared/tf/tf_viewmodel.cpp

@@ -124,7 +124,7 @@ ConVar cl_gunlowerspeed( "cl_gunlowerspeed", "2", FCVAR_CLIENTDLL | FCVAR_CHEAT
 
 ConVar tf_use_min_viewmodels( "tf_use_min_viewmodels", "0", FCVAR_ARCHIVE, "Use minimized viewmodels." );
 
-ConVar tf_viewmodels_offset_override( "tf_viewmodels_offset_override", "", FCVAR_CHEAT, "If set, this will override the position of all viewmodels. Usage 'x y z'" );
+ConVar tf_viewmodels_offset_override( "tf_viewmodels_offset_override", "", 0, "If set, this will override the position of all viewmodels. Usage 'x y z'" );
 #endif
 
 void CTFViewModel::CalcViewModelView( CBasePlayer *owner, const Vector& eyePosition, const QAngle& eyeAngles )
@@ -185,6 +185,13 @@ void CTFViewModel::CalcViewModelView( CBasePlayer *owner, const Vector& eyePosit
 		if ( bOverride )
 		{
 			UTIL_StringToVector( viewmodelOffset.Base(), pszVMOffsetOverride );
+			static ConVarRef sv_cheats("sv_cheats");
+			if (!sv_cheats.GetBool())
+			{
+				viewmodelOffset.x = clamp(viewmodelOffset.x, -2.0f, 2.5f);
+				viewmodelOffset.y = clamp(viewmodelOffset.y, -2.0f, 2.0f);
+				viewmodelOffset.z = clamp(viewmodelOffset.z, -2.0f, 2.0f);
+			}
 		}
 		else
 		{