chore: Refactor `GameList`

[mikew]

This brings along some much needed organization:

• GameDialog/GameDialogInner are now GameDialogSuspense/GameDialog, and driven by redux
• App.tsx now owns the menu and AppBar area, while also rendering OnboardingAlerts and GameDialogSuspense

• GameList is now literally the game ... list, while also rendering the toolbar

  • The toolbar itself is rendered via what I've dubbed a "slot portal": a way to for one component to render something in another react component elsewhere in the tree. This is a small wrapper around context + a ref, inspired by work from @smartbadger

  This lets GameList continue to manage its filter api and fields like it always has, but the fields themselves are rendered somewhere totally different

• Some random typescript types are now moved to ${feature}/types.ts, or lib/typescript-helpers/...

And some more bug fixes:

• Call cache.gc() after resetting apollo cache
• Don't save missing fields in updateGame mutation

[mikew]

Unintentional, but this may have fixed https://github.com/mikew/wadpunk/issues/50