docs: update d-sports-engage-native with full project structure

[mintlify]

Summary

Updates the d-sports-engage-native documentation page to reflect the full codebase structure from the initial repository commit.

Changes

• Updated tech stack table with specific package versions (Expo 54.0, React Native 0.81.5, etc.)
• Added project structure tree showing app, components, hooks, and lib directories
• Added architecture patterns section covering file-based routing, modular screen architecture, and state management
• Added branding colors section
• Converted getting started to code block format

Source files changed

• d-sports-ecosystem/d-sports-engage-native initial commit (78806942) — full codebase