chore: Add automatic attribution management for BasicMapViewController.

[iHackSubhodip]

Summary

• Adds automatic Google Maps SDK usage attribution for sample applications
• Introduces GoogleMapsAttributionManaging protocol with default implementation
• Automatically derives sample names from view controller class names (e.g., BasicMapViewController → basicmap)
• Updates BasicMapViewController to use the new attribution system

Changes

• New: GoogleMapsAttributionManaging.swift - Protocol and manager for attribution tracking
• Modified: BasicMapViewController.swift - Integrated attribution management with dependency injection
• Enhanced: Automatic attribution ID generation following format: gmp_git_iosmapssamples_v{majorVersion}_{sampleName}

Validation