feat: add services module with AI predictions

Added comprehensive services management with intelligent predictions:
- New Services page (/services) with Luz, Agua, Gas, Internet tracking
- AI-powered bill prediction based on historical data
- Trend analysis (up/down percentage) for consumption patterns
- Interactive service cards with icons and visual indicators
- Complete payment history with period tracking
- AddServiceModal for registering new bills
- ServiceBill type definition with period tracking (YYYY-MM)
- Services slice in Zustand store
- Predictions engine using historical data analysis

🤖 Generated with [Claude Code](https://claude.com/claude-code)

lib/types.ts

@@ -62,12 +62,23 @@ export interface Alert {
   relatedId?: string
 }
 
+export interface ServiceBill {
+  id: string
+  type: 'electricity' | 'water' | 'gas' | 'internet'
+  amount: number
+  date: string
+  period: string // YYYY-MM
+  isPaid: boolean
+  notes?: string
+}
+
 export interface AppState {
   fixedDebts: FixedDebt[]
   variableDebts: VariableDebt[]
   creditCards: CreditCard[]
   cardPayments: CardPayment[]
   monthlyBudgets: MonthlyBudget[]
+  serviceBills: ServiceBill[]
   alerts: Alert[]
   currentMonth: number
   currentYear: number