commit 6ceb808

This is identical to using the hidehud cvar. I was thinking of something more refined, though I should've mentioned that in the PR.

I have this code from 2 years ago which allows the individual visibility of each hud element instead of hud render groups like how hidehud bits do. This is closer to what I had in my mind.

void CScriptVGUI::SetHUDPanelHiddenBits( const char* name, int bits )
{
	CHudElement* elem = gHUD.FindElement(name);
	if ( !elem )
		return;

	elem->SetHiddenBits( bits );
}

This could be reworked to a user-friendly SetHudElementVisible(string, bool) version that sets hiddenbits to -1 or their previous value which would be saved on the initial call on the particular hud element.

If you approve but don't wish to make this, I can open a PR for it.