VSN-2510/ feat(planning & profile): Add contact sections to trip detail & driver profile

What this MR does:

Adds 4 new contact sections across the planning trip detail view and the driver profile screen, improving access to key contacts directly from the app.

Changes:

Trip detail — Representatives section: displays passenger representatives (name, relation type, phone & email action buttons) Trip detail — Exploitation contact section (mock data): new section showing the operations contact (name, role, phone, email) Profile — RH contact section (mock data): displays the HR contact with action buttons Profile — Fleet contact section (mock data): displays the fleet manager contact with action buttons Visual consistency: unified header icon colours across all trip detail sections (colors.textSecondary); replaced hardcoded color values in RouteSection with theme-aware colors.primary