feat: Update API endpoint usage in repositories to remove redundant path property

- Refactored multiple repository implementations across client and staff features to directly use endpoint objects without accessing the `path` property.
- Introduced a new `FeatureGate` class for client-side feature gating based on user scopes, allowing for better access control to API endpoints.
- Added `ApiEndpoint` class to represent API endpoints with their paths and required scopes for future feature gating.

apps/mobile/packages/features/staff/profile_sections/onboarding/attire/lib/src/data/repositories_impl/attire_repository_impl.dart

@@ -27,7 +27,7 @@ class AttireRepositoryImpl implements AttireRepository {
 
   @override
   Future<List<AttireChecklist>> getAttireOptions() async {
-    final ApiResponse response = await _api.get(StaffEndpoints.attire.path);
+    final ApiResponse response = await _api.get(StaffEndpoints.attire);
     final List<dynamic> items = response.data['items'] as List<dynamic>;
     return items
         .map((dynamic json) =>
@@ -100,7 +100,7 @@ class AttireRepositoryImpl implements AttireRepository {
 
     // 5. Update attire item via V2 API
     await _api.put(
-      StaffEndpoints.attireUpload(itemId).path,
+      StaffEndpoints.attireUpload(itemId),
       data: <String, dynamic>{
         'photoUrl': photoUrl,
         'verificationId': verifyRes.verificationId,

apps/mobile/packages/features/staff/profile_sections/onboarding/emergency_contact/lib/src/data/repositories/emergency_contact_repository_impl.dart

@@ -17,7 +17,7 @@ class EmergencyContactRepositoryImpl
   @override
   Future<List<EmergencyContact>> getContacts() async {
     final ApiResponse response =
-        await _api.get(StaffEndpoints.emergencyContacts.path);
+        await _api.get(StaffEndpoints.emergencyContacts);
     final List<dynamic> items = response.data['contacts'] as List<dynamic>;
     return items
         .map((dynamic json) =>
@@ -28,7 +28,7 @@ class EmergencyContactRepositoryImpl
   @override
   Future<void> saveContacts(List<EmergencyContact> contacts) async {
     await _api.put(
-      StaffEndpoints.emergencyContacts.path,
+      StaffEndpoints.emergencyContacts,
       data: <String, dynamic>{
         'contacts':
             contacts.map((EmergencyContact c) => c.toJson()).toList(),

apps/mobile/packages/features/staff/profile_sections/onboarding/experience/lib/src/data/repositories/experience_repository_impl.dart

@@ -16,14 +16,14 @@ class ExperienceRepositoryImpl implements ExperienceRepositoryInterface {
   @override
   Future<List<String>> getIndustries() async {
     final ApiResponse response =
-        await _api.get(StaffEndpoints.industries.path);
+        await _api.get(StaffEndpoints.industries);
     final List<dynamic> items = response.data['industries'] as List<dynamic>;
     return items.map((dynamic e) => e.toString()).toList();
   }
 
   @override
   Future<List<String>> getSkills() async {
-    final ApiResponse response = await _api.get(StaffEndpoints.skills.path);
+    final ApiResponse response = await _api.get(StaffEndpoints.skills);
     final List<dynamic> items = response.data['skills'] as List<dynamic>;
     return items.map((dynamic e) => e.toString()).toList();
   }
@@ -34,7 +34,7 @@ class ExperienceRepositoryImpl implements ExperienceRepositoryInterface {
     List<String> skills,
   ) async {
     await _api.put(
-      StaffEndpoints.personalInfo.path,
+      StaffEndpoints.personalInfo,
       data: <String, dynamic>{
         'industries': industries,
         'skills': skills,

apps/mobile/packages/features/staff/profile_sections/onboarding/profile_info/lib/src/data/repositories/personal_info_repository_impl.dart

@@ -28,7 +28,7 @@ class PersonalInfoRepositoryImpl implements PersonalInfoRepositoryInterface {
   @override
   Future<StaffPersonalInfo> getStaffProfile() async {
     final ApiResponse response =
-        await _api.get(StaffEndpoints.personalInfo.path);
+        await _api.get(StaffEndpoints.personalInfo);
     final Map<String, dynamic> json =
         response.data as Map<String, dynamic>;
     return StaffPersonalInfo.fromJson(json);
@@ -40,7 +40,7 @@ class PersonalInfoRepositoryImpl implements PersonalInfoRepositoryInterface {
     required Map<String, dynamic> data,
   }) async {
     final ApiResponse response = await _api.put(
-      StaffEndpoints.personalInfo.path,
+      StaffEndpoints.personalInfo,
       data: data,
     );
     final Map<String, dynamic> json =
@@ -65,7 +65,7 @@ class PersonalInfoRepositoryImpl implements PersonalInfoRepositoryInterface {
 
     // 3. Submit the photo URL to the V2 API.
     await _api.post(
-      StaffEndpoints.profilePhoto.path,
+      StaffEndpoints.profilePhoto,
       data: <String, dynamic>{
         'fileUri': uploadRes.fileUri,
         'photoUrl': photoUrl,