show flight plan button to see if conflicts with simbrief and airac#1890

Add a dedicated “Show Flight Plan” (or flight plan details) button directly within the interface that provides an immediate, at-a-glance comparison tool.

This view should highlight:

SimBrief Integration: Quickly verify that the active route matches the latest imported SimBrief flight plan.

AIRAC Cycle Match: Instantly flag any version mismatches between the simulator’s navigation database and the flight plan data (e.g., missing waypoints, outdated procedures, or discontinued airways).