fix: tristate toggle logic for tab visibilty (#5530)

Co-authored-by: Nerixyz <nerixdev@outlook.de>

src/controllers/commands/builtin/chatterino/Debugging.cpp

@@ -132,4 +132,16 @@ QString forceImageUnload(const CommandContext &ctx)
     return "";
 }
 
+QString debugTest(const CommandContext &ctx)
+{
+    if (!ctx.channel)
+    {
+        return "";
+    }
+
+    ctx.channel->addSystemMessage("debug-test called");
+
+    return "";
+}
+
 }  // namespace chatterino::commands