Add enums, AuthService, and integrate backend registration endpoints

- Add separate enum files: BuildingType, PropertyStatus, BookingStatus, CommissionType, IdentityType, UserRole, City, LoginMethod, OwnerType, CustomerType
- Add AuthService (addToken/getToken/deleteToken)
- Update api.js: use AuthService, add Owner/Add and Customer/Add endpoints
- Update login page to use AuthService for token storage
- Rewrite owner register: 3-step flow with OwnerType dropdown, backend integration, OTP verification
- Rewrite tenant register: 2-step flow with CustomerType dropdown, backend integration, OTP verification
- Update homepage and property detail to use enums instead of hardcoded maps
- Update AddPropertyForm to import from enums directly
- Add console logs and status toasts linked to API response messages

app/enums/PropertyStatus.js

@@ -0,0 +1,33 @@
+/**
+ * PropertyStatus Enum
+ * Backend values are numeric (0, 1, 2)
+ * Used in: PropertyInformation.status
+ */
+const PropertyStatus = Object.freeze({
+  AVAILABLE: 0,
+  BOOKED: 1,
+  MAINTENANCE: 2,
+});
+
+// Map numeric value → Arabic label
+const PropertyStatusLabels = Object.freeze({
+  [PropertyStatus.AVAILABLE]: 'متاح',
+  [PropertyStatus.BOOKED]: 'محجوز',
+  [PropertyStatus.MAINTENANCE]: 'صيانة',
+});
+
+// Map numeric value → English key (for UI filters)
+const PropertyStatusKeys = Object.freeze({
+  [PropertyStatus.AVAILABLE]: 'available',
+  [PropertyStatus.BOOKED]: 'booked',
+  [PropertyStatus.MAINTENANCE]: 'maintenance',
+});
+
+// Reverse map: English key → numeric value
+const PropertyStatusByKey = Object.freeze({
+  available: PropertyStatus.AVAILABLE,
+  booked: PropertyStatus.BOOKED,
+  maintenance: PropertyStatus.MAINTENANCE,
+});
+
+export { PropertyStatus, PropertyStatusLabels, PropertyStatusKeys, PropertyStatusByKey };