Add FXIOS-14256 [Performance] Add toggle for translucency refactor feature flag (#31107)

Add toggle for translucency refactor ff

Author: Cramsden

firefox-ios/Client/Frontend/Settings/Main/Debug/FeatureFlags/FeatureFlagsDebugViewController.swift

@@ -213,6 +213,13 @@ final class FeatureFlagsDebugViewController: SettingsTableViewController, Featur
             ) { [weak self] _ in
                 self?.reloadView()
             },
+            FeatureFlagsBoolSetting(
+                with: .toolbarTranslucencyRefactor,
+                titleText: format(string: "Toolbar Translucency Refactor"),
+                statusText: format(string: "Toggle to enable the toolbar translucency refactor")
+            ) { [weak self] _ in
+                self?.reloadView()
+            },
             FeatureFlagsBoolSetting(
                 with: .touFeature,
                 titleText: format(string: "Terms of Use"),