qa(diag): gate setup logs behind gigline.SetupLogs cvar (#14)

Merged PR #14: gate setup logs behind cvar

Co-authored-by: Zwitschi <zwitschi82@gmail.com>

Game/GigLine/Config/DefaultEngine.ini

@@ -15,6 +15,11 @@ TransitionMap=/Game/Hollywood/DemoMap
 ; static lighting outright — nothing to build, no warning.
 r.AllowStaticLighting=False
 
+[ConsoleVariables]
+; Dev diagnostics (spawn/input setup logs) are off by default in shipped builds.
+; Re-enable at runtime: `gigline.SetupLogs 1`.
+gigline.SetupLogs=0
+
 [URL]
 GameName=GigLine