[tvOS] Update ConnectToServerView & UserSignInView

[JPKribs]

Summary

Continues the work from #1113 with updates from the feedback provided. Increases padding in a lot of locations and swaps out the Public Users list for a grid.

Since this view is essentially the same thing between ConnectToServerView and UserSignInView I created SplitLoginWindowView in the same vein as SplitFormWindowView. This works as 2 sections, with titles and content, separated by a divider with a Jellyfin logo at the top.

For ConnectToServerView, the only real changes made are changes to make the LocalServerButton better mirror the PublicUserButton and making the connect button match the sign in button.

In my screenshots below, I duplicated by Server/Users to fill out the list more. This is why there are duplicates.

Connect To Server

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Before

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After

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User Sign In

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Before

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After

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[JPKribs]

Here's what this now look like:

Just moved this to the actual toolbar to work better. Here are all of the views that have this:

User Selection

With Background

Without Background

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User Login

With example ProgressView()

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Server Connection

[LePips]

I'm moving away from the pattern of functions on views that supply the content through () -> any View, at least where the views aren't actually customizable and should be using generics instead.

These views still have some work that can be done like having the server splash screen on the background of UserSignInView as well as some design refinements.