Component specific Skeleton components

[ejmg]

Description

As of now, the skeletons being used are in-lined and ad-hoc. It would be good to make skeleton components that are specific to the component being loaded by the application. This would probably include a skeleton component for (at least) each of the following scenarios:

• Theme Toggle/Navbar (Navbar jumping during hydration #121)
• All table pages as they all eventually get switched to paginated + suspense support (Paginate IBC Tables #85, Add <Suspense> for components with data fetching #32)
• Block/Transaction/IBC {Client|Channel|Connection}

Skeletons + Suspense already improve UI transitions for the user. Making the Skeletons reflect what is about to be loaded further helps improve on transition/page load UX.