feat(packages): add @manacore/bot-services shared package

Introduces a new shared package containing transport-agnostic business
logic services for Matrix bots and the Gateway. This enables:

- Individual bots to import shared services
- A unified Gateway bot to combine all features
- Code reuse without duplication

Services included:
- TodoService: Task management with projects, priorities, dates
- CalendarService: Events, calendars, reminders
- AiService: Ollama LLM integration, chat sessions, vision
- ClockService: Timers, alarms, world clocks (API client)
- Placeholder modules for Nutrition, Quotes, Stats, Docs

Key features:
- Pluggable storage providers (file-based, in-memory, custom)
- German natural language input parsing
- NestJS module system with dependency injection
- Fully testable in isolation

https://claude.ai/code/session_015bwcqVRiFmSydYTjvDJGTc

packages/bot-services/src/stats/index.ts

@@ -0,0 +1,20 @@
+// Placeholder - to be implemented
+// Will integrate with Umami analytics API
+
+export interface StatsServiceConfig {
+	apiUrl: string;
+	username: string;
+	password: string;
+}
+
+export interface AnalyticsReport {
+	pageviews: number;
+	visitors: number;
+	bounceRate: number;
+	avgDuration: number;
+}
+
+// Export placeholder module
+export const StatsModule = {
+	register: () => ({ module: class {}, providers: [], exports: [] }),
+};