Move DXBC shader friendly naming logic into C++ side code

* This makes more sense and lets us share it between Qt and C# UIs.

qrenderdoc/Code/Interface/PersistantConfig.cpp

@@ -234,6 +234,8 @@ bool PersistantConfig::Load(const QString &filename)
     SetConfigSetting(key, ConfigSettings[key]);
   }
 
+  RENDERDOC_SetConfigSetting("Disassembly_FriendlyNaming", ShaderViewer_FriendlyNaming ? "1" : "0");
+
   // localhost should always be available as a remote host
   bool foundLocalhost = false;
 
@@ -262,6 +264,8 @@ bool PersistantConfig::Save()
   for(RemoteHost *host : RemoteHosts)
     RemoteHostList.push_back(*host);
 
+  RENDERDOC_SetConfigSetting("Disassembly_FriendlyNaming", ShaderViewer_FriendlyNaming ? "1" : "0");
+
   return Serialize(m_Filename);
 }