2025Q2 METRICO DOCUMENTATION

Update documentation for METRICO

• ~/doc/architecture/metrico.md
  • No changes
• ~/doc/service_design/monitoring/design_monitoring_services.md
  • Changed the picture with the RFS that shows the version
  • Changes the picture to depict the new characteristics (in v1.0 start and stop characteristics have been removed )
  • Removed the description of start and stop characteristics
• ~/doc/service_design/examples/monitoring_aas/monitoring_aas.md
  • Changed some pictures and removed __MT__START_TIME and __MT__STOP_TIME