feat: add FSTRaK EFB tablet app for MSFS 2024

[o4oren]

Summary

• Adds msfs-addon/fstrak-efb-app/ — a new MSFS 2024 Community addon that registers the FSTRaK moving map as an EFB tablet app, alongside the existing toolbar panel
• The EFB app is a TypeScript/JSX bundle (esbuild) that renders a full-screen iframe to http://127.0.0.1:8765/panel — zero changes to panel.html or the tile server
• Updates msfs-addon/README.md and GitHub Pages (docs/index.html) with install instructions, usage, and developer build guide for both addons

Notes

• PackageSources/efb_api/ is gitignored — must be copied from the MSFS 2024 SDK before building (documented in README)
• Build step required on Windows: npm install + npm run build in PackageSources/FSTRaKApp/, then python generate_layout.py
• The jsxFactory in tsconfig.json should be verified against the SDK's own template tsconfig.json before first build
• MSFS 2020 users unaffected — EFB package simply won't load on 2020

Test Plan

• Copy efb_api/ from MSFS 2024 SDK into PackageSources/efb_api/
• Run npm install + npm run build in PackageSources/FSTRaKApp/ — verify dist/ is produced
• Run python generate_layout.py — verify layout.json is updated
• Copy fstrak-efb-app/ to MSFS 2024 Community folder, restart MSFS 2024
• Open EFB tablet in-sim — verify FSTRaK app icon appears on home screen
• Open app — verify moving map loads and tracks aircraft
• Verify toolbar panel (fstrak-ingame-panel) still works normally alongside the EFB app

🤖 Generated with Claude Code