feat: add CDN loading option for DuckDB WASM assets in Docker

- Updated environment-variables.md to include instructions for loading DuckDB WASM assets from a CDN.
- Added support for custom CDN base URL configuration.

chore: bump version to 0.0.28 and update dependencies

- Updated package.json version to 0.0.28 with a new release date.
- Updated various dependencies to their latest versions, including:
  - @mlc-ai/web-llm to ^0.2.81
  - @tailwindcss/vite to ^4.2.1
  - @tanstack/react-virtual to ^3.13.19
  - framer-motion to ^12.34.3
  - lodash to ^4.17.23
  - openai to ^6.25.0
  - react and react-dom to ^19.2.4
  - react-dropzone to ^14.4.1
  - react-error-boundary to ^6.1.1
  - react-hook-form to ^7.71.2
  - react-router to ^7.13.1
  - sql-formatter to ^15.7.2
  - tailwind-merge to ^3.5.0
  - zod to ^4.3.6
  - zustand to ^5.0.11
- Updated devDependencies to their latest versions.

Author: caioricciuti