Add FXIOS-10605 [ToS] Firefox iOS: Nimbus Flag for ToS (#23251)

* FXIOS-10605 Firefox iOS: Nimbus Flag for ToS

* Removed ToS feature from FeatureDebugViewController

Author: dicarobinho

firefox-ios/Client/FeatureFlags/NimbusFlaggableFeature.swift

@@ -44,6 +44,7 @@ enum NimbusFeatureFlagID: String, CaseIterable {
     case toolbarRefactor
     case toolbarOneTapNewTab
     case toolbarNavigationHint
+    case tosFeature
     case trackingProtectionRefactor
     case zoomFeature
 
@@ -125,6 +126,7 @@ struct NimbusFlaggableFeature: HasNimbusSearchBar {
                 .toolbarRefactor,
                 .toolbarOneTapNewTab,
                 .toolbarNavigationHint,
+                .tosFeature,
                 .trackingProtectionRefactor,
                 .zoomFeature:
             return nil

firefox-ios/Client/Nimbus/NimbusFeatureFlagLayer.swift

@@ -106,6 +106,9 @@ final class NimbusFeatureFlagLayer {
         case .toolbarNavigationHint:
             return checkToolbarNavigationHintFeature(from: nimbus)
 
+        case .tosFeature:
+            return checkTosFeature(from: nimbus)
+
         case .trackingProtectionRefactor:
             return checkTrackingProtectionRefactor(from: nimbus)
 
@@ -210,6 +213,11 @@ final class NimbusFeatureFlagLayer {
         return config.navigationHint
     }
 
+    private func checkTosFeature(from nimbus: FxNimbus) -> Bool {
+        let config = nimbus.features.tosFeature.value()
+        return config.status
+    }
+
     private func checkTrackingProtectionRefactor(from nimbus: FxNimbus) -> Bool {
         let config = nimbus.features.trackingProtectionRefactor.value()
         return config.enabled

firefox-ios/nimbus-features/tosFeature.yaml

@@ -0,0 +1,18 @@
+# The configuration for the tosFeature feature
+features:
+  tos-feature:
+    description: >
+        This feature is for managing the roll out of the ToS (Term of Service) implementation
+    variables:
+      status:
+        description: >
+            Enables the feature
+        type: Boolean
+        default: false
+    defaults:
+      - channel: beta
+        value:
+          status: false
+      - channel: developer
+        value:
+          status: false

firefox-ios/nimbus.fml.yaml

@@ -40,5 +40,6 @@ include:
   - nimbus-features/spotlightSearchFeature.yaml
   - nimbus-features/tabTrayFeature.yaml
   - nimbus-features/toolbarRefactorFeature.yaml
+  - nimbus-features/tosFeature.yaml
   - nimbus-features/trackingProtectionRefactor.yaml
   - nimbus-features/zoomFeature.yaml