add fake experiment (#3688)

Task/Issue URL:
https://app.asana.com/0/72649045549333/1208905776162821/f
Tech Design URL:
CC:

**Description**: Used Fake Test feature to generate a cohort and do and
A/A test run of the New experiment framework. We want to make sure
cohort is assigned and pixels are fired as expected.

Author: SabrinaTardio

DuckDuckGo.xcodeproj/project.pbxproj

@@ -11372,7 +11372,7 @@
 			repositoryURL = "https://github.com/DuckDuckGo/BrowserServicesKit";
 			requirement = {
 				kind = exactVersion;
-				version = 218.0.0;
+				version = 218.0.1;
 			};
 		};
 		9F8FE9472BAE50E50071E372 /* XCRemoteSwiftPackageReference "lottie-spm" */ = {

DuckDuckGo.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -32,8 +32,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/DuckDuckGo/BrowserServicesKit",
       "state" : {
-        "revision" : "e5d390c8559fbe7b1ca67fd3982c91bcc0437d60",
-        "version" : "218.0.0"
+        "revision" : "bbcb41c87c5788718a43883b5b10eb3b4f54aff3",
+        "version" : "218.0.1"
       }
     },
     {

DuckDuckGo/NewTabPageViewModel.swift

@@ -19,6 +19,7 @@
 
 import Foundation
 import Core
+import BrowserServicesKit
 
 final class NewTabPageViewModel: ObservableObject {
 
@@ -39,6 +40,9 @@ final class NewTabPageViewModel: ObservableObject {
         isIntroMessageVisible = introDataStorage.newTabPageIntroMessageEnabled ?? false
         isOnboarding = false
         isShowingSettings = false
+
+        // This is just temporarily here to run an A/A test to check the new experiment framework works as expected
+        _ = AppDependencyProvider.shared.featureFlagger.getCohortIfEnabled(for: CredentialsSavingFlag())
     }
 
     func introMessageDisplayed() {
@@ -78,3 +82,19 @@ final class NewTabPageViewModel: ObservableObject {
         isDragging = false
     }
 }
+
+// This is just temporarily here to run an A/A test to check the new experiment framework works as expected
+public struct CredentialsSavingFlag: FeatureFlagExperimentDescribing {
+    public init() {}
+
+    public typealias CohortType = Cohort
+
+    public var rawValue = "credentialSaving"
+
+    public var source: FeatureFlagSource = .remoteReleasable(.subfeature(ExperimentTestSubfeatures.experimentTestAA))
+
+    public enum Cohort: String, FlagCohort {
+        case control
+        case blue
+    }
+}