v1.0.3

Add webapp API and auth utilities, update structure
Introduces new API and authentication utility modules under src/utils/webapp, including client, endpoints, types, and auth-related services and guards. Moves shimmer.css and tabLink.ts to a new front/ directory. Updates .gitignore for additional environment and security files. Minor changes to src/index.css and src/index.ts, and updates to auth component utilities.