Add new upstash plans, prodpack, upgrade

[swilson-fly]

Change Summary

What and Why: Upstash is adding new fixed plans, new add ons, and and deprecating the existing Pro, starter, standard plans. This PR implements the flyctl changes for it.

New Plans:

 flyio_fixed_250mb --> $10 + $5 per read region  
 flyio_fixed_1gb --> $20 + $10 per read region 
 flyio_fixed_5gb --> $100 + $50 per read region  
 flyio_fixed_10gb --> $200 + $100 per read region
 flyio_fixed_10gb --> $200 + $100 per read region

New Add ons

prod_pack --> $200/mo
auto_upgrade --> for fixed plans, automatically grades through the tiers

Users on the old plans are not being forced to change and the default remains pay-as-you-go. PAYG users can add the prod_pack but not the auto_upgrade option. The plans are passed to web and then Upstash via the same methods as the existing plans. The Add-ons are passed through as options, similar to how we do eviction currently eviction.

How:

Fairly minimal changes on top of the existing Upstash flow. Most of the additions are extra plan detection logic to avoid ops on the deprecated plans, and restricting add-ons to only the plans that support them.

Related to:

Web PR for adding new plans to DB and Graphql schema.

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Documentation

• Fresh Produce
• In superfly/docs, or asked for help from docs team
• n/a