adds support for overriding the footer component, similar to the TopBar override setup. Users can now customize footer content such as legal terms, contact info, and copyrights.

this change introduces `Footer.astro` and `FooterWrapper.astro` files to allow flexible slotting of footer items, improving customization for standalone tutorial deployments

close #323

…ooter

extend the override-components plugin to allow customization of the Footer component. added a new `Footer` option to the `OverrideComponentsOptions` interface, updated the `load` function to export the Footer, and introduced a `resolveDefaultFooter` helper function to handle default paths based on the `defaultRoutes` option.

BREAKING CHANGE: users upgrading to this version must update their `astro.config.ts` if they wish to customize the new Footer component. refer to the updated documentation for usage.

adds support for overriding the footer component via named slots (edit-page-link, lesson-links, webcontainers-link) in Footer.astro, enabling flexible customization of footer content in FooterWrapper.astro.

updated TutorialContent.astro to use FooterWrapper.astro for rendering footer elements, aligning with the new slot-based structure. this change ensures consistent and modular handling of footer elements across tutorials.

close #423

…itz/tutorialkit into ronith/overriding-footer

The Fragment component was causing a linter error when used with slots in Astro. Replaced it with a div element which is properly supported.

closes #323