Added safe area inset for standalone pwa apps see #89.

CHANGELOG.md

apps/fullstack/app/(unprotected)/layout.tsx

apps/fullstack/app/layout.tsx

apps/fullstack/app/manifest.ts

apps/fullstack/components/common/Footer.module.scss

apps/fullstack/components/common/Header.module.scss

apps/fullstack/components/common/Sidebar.module.scss

apps/fullstack/components/editor/editor.module.scss

apps/fullstack/components/editor/index.tsx

apps/fullstack/components/editor/sidebar/sidebar.module.scss