Add System Logout demo app (361)

[oblomov-dev]

Summary

This PR adds a new demo application that showcases the system logout functionality in abap2UI5. The demo allows users to trigger a SYSTEM_LOGOUT client event, which handles sign-out either through a Fiori Launchpad shell container or by navigating to the ICF logoff endpoint.

Key Changes

• New Demo App (z2ui5_cl_demo_app_361): Created a new application class that demonstrates the system logout feature

  • Implements the z2ui5_if_app interface
  • Displays an informational message explaining the logout functionality
  • Provides two logout buttons with consistent styling and icons
  • Uses the client->_event_client( client->cs_event-system_logout ) event to trigger logout

• Updated Demo Navigation (z2ui5_cl_demo_app_000): Added a new tile in the main demo app menu

  • Links to the new System Logout demo
  • Includes descriptive header and subheader text
  • Maintains consistent styling with other demo tiles

Implementation Details

• The logout UI is built using the z2ui5_cl_util_xml utility for XML/UI5 view generation
• The page includes a MessageStrip component with an Information type to educate users about the feature
• Two action buttons are provided: one in the header and one in the message strip, both triggering the same SYSTEM_LOGOUT event
• The implementation follows the existing abap2UI5 patterns and conventions

https://claude.ai/code/session_01HNzSniBLv2WAPqxL6KEajy