This commit introduces a new page at `/webDev` to display web development services and pricing plans.
To support this, a new reusable composable `useLocalizedCollection` has been created to simplify fetching localized content from Nuxt
Content. The index page has been refactored to use this new composable.
- Adds `webDev.vue` page and corresponding `webDev.yml` content files for EN and ZH.
- Defines a Zod schema in `content.config.ts` for the new content type.
- Updates the navigation link to point to the new page.
Replaced the static navigation with a dynamic, internationalized dropdown menu powered by a new `useNavLinks` composable. The
navigation items are now sourced from i18n files. The featured project cards on the homepage have been refactored to use the
`<UPageCard>` component, and the content schema is updated with `spotlight` and `highlight` options for enhanced display.
