Improve Theme (#279)

* Add a functional demo web server and documentation page

Create a Node.js HTTP server to serve the Galio Framework demo page, including HTML structure, CSS styling, and server logic.


* Add theme support for light, dark, and auto modes

Introduce theme provider with support for 'light', 'dark', and 'auto' modes, utilizing `useColorScheme` hook for system preference detection. Implements `deepMerge` for theme customization and adds `useThemeColors` hook.


* Update button component to use new theme color system

Refactors the Button component to consume colors from `useThemeColors` hook instead of directly from `useGalioTheme`, ensuring consistent theme application across the application.
* Update input component to use theme colors dynamically

Refactors the Input component to use `useThemeColors` hook for dynamic color application, improving theme adaptability and removing hardcoded color values.

Update package.json

Update package.json

Add 'mobile apps' to package keywords

Updated the package.json keywords array to include 'mobile apps' for improved discoverability related to mobile application development.

Bump version to 0.9.1

Update package.json version from 0.9.1-beta.3 to 0.9.1 for release.

0.9.1-beta.0

Merge pull request #252 from galio-org/dev

v0.8.1

Merge pull request #241 from galio-org/dev

v0.8.0

Merge pull request #219 from galio-org/dev

v0.7.1

Merge pull request #216 from galio-org/dev

v0.7.0