chore: update Node version and enhance debugging capabilities

- Removed .nvmrc file to eliminate version locking.
- Updated Dockerfile to use Node 22.6.0-alpine for improved performance and security.
- Modified package.json to enhance the 'start:dev' script with debugging options.
- Added new launch configuration in VSCode for attaching to Node processes by PID.
- Cleaned up settings.json by removing unused configurations.
- Refactored main.ts to simplify the bootstrap process.
- Enhanced logging in OrderSchema and ScheduleSchema for better traceability of operations.

package.json

@@ -9,7 +9,7 @@
     "build": "nest build",
     "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
     "start": "nest start",
-    "start:dev": "nest start --watch",
+    "start:dev": "nest start --watch --inspect --debug",
     "start:debug": "nest start --debug --watch",
     "start:prod": "node dist/main",
     "prisma:generate": "npx prisma generate --schema=./epess-database/prisma/schema.prisma",