Add stats, feeds, scheduler, and guild backup features to the bot

- Introduced new models in the Prisma schema for statistics, social feeds, scheduled messages, and guild backups, enhancing the bot's functionality.
- Implemented command modules for managing stats channels, feeds, scheduling messages, and creating/restoring backups, improving user engagement and server management.
- Updated job handling to include dedicated workers for stats updates, feed polling, scheduling, and backup restoration, enhancing automation.
- Enhanced command localization for new features in both German and English.
- Documented the new features and their setup processes in PHASE-TRACKING.md for clarity on implementation steps.

apps/bot/src/env.ts

@@ -17,7 +17,9 @@ const EnvSchema = z.object({
   BACKUP_DIR: z.string().default('/backups'),
   METRICS_TOKEN: z.string().optional(),
   HEALTH_PORT: z.coerce.number().int().positive().default(8080),
-  PUBLIC_BASE_URL: z.string().url().default('http://localhost:8080')
+  PUBLIC_BASE_URL: z.string().url().default('http://localhost:8080'),
+  TWITCH_CLIENT_ID: z.string().min(1).optional(),
+  TWITCH_CLIENT_SECRET: z.string().min(1).optional()
 });
 
 export const env = EnvSchema.parse(process.env);