## Rounds prices for certain locales.
The server now returns a list of storefront country codes where paywalls
should not display cents. This part of paywall data, in
`zero_decimal_place_countries`.
Prices are only truncated if the price ends in .00.
### Motivation
Template 5 but with multiple tiers 😊
### Description
Enabling Template 7 by changing `7_disabled` to `7`
- Changed a `header.jpg` to `header.heic` to try and fix issue with
weirdly failing snapshot UI test
- Changed visibility on `TestData` from `public` to `internal`
- Hides tier selector if only one tier
- Changed `color_overrides_by_tier` to `colors_by_tier` and
`image_overrides_by_tier` to `images_by_tier`
- The original implementation was going to default to existing color and
images configurations and then override by tier
- However, this turned out to be harder to implement on the
configuration side
- `Colors` got four new optional values
- `tier_control_background`
- `tier_control_foreground`
- `tier_control_selected_background`
- `tier_control_selected_foreground`
### Demo
#### Full Screen
https://github.com/RevenueCat/purchases-ios/assets/401294/e5317a53-428c-415e-a1a1-b4231d32a776
### Footer
https://github.com/RevenueCat/purchases-ios/assets/401294/8905b55e-0fa2-49f0-aa1c-d4c1e694fb5b
### Footer Condensed
https://github.com/RevenueCat/purchases-ios/assets/401294/311d78fb-bdeb-43cd-b601-9c60a8a54b6f
`PaywallView` and `PaywallViewController` (along with the extensions)
still require iOS 16, but this paves the way to support iOS 15 down the
road if we need to.
### Main Changes:
- Changed all `@available` annotations
- Added CI tests
- Replaced `ViewThatFits` with the "biggest" version
- Because of that, `scrollableIfNeeded` is always scrollable
- Double `Regex` implementation (keeping the modern one), so once we
drop support for iOS 15 we can just keep the modern one.
### TODO:
- [x] Add snapshots
- [x] Test paywalls
- [x] Updated APITester to verify this
The main change is that `VariableHandler` no longer cashes when trying
to determine price per month for non-subscriptions. I added a test to
cover this behavior.
- Added support for `PackageSetting.multiple`
- Changed `PackageConfiguration.multiple` to ensure at compile time that
the list of packages is not empty
- Renamed `Example1Template` to `SinglePackageTemplate`
- Extracted `RemoteImage`
- Added snapshot tests
<img width="196" alt="screenshot_2023-07-20_at_16 01 14"
src="https://github.com/RevenueCat/purchases-ios/assets/685609/c7d6ae58-a608-414a-b5b1-11638e1a2a67">
Changed `PaywallData.Configuration.headerImageName` to `imageNames`.
This more flexible definition allows future templates to display a
carrousel of images instead of a single image.
Depends on #2831.
### Changes:
- Created `TemplateViewConfiguration` to encapsulate all processed
configuration for a paywall
- Created `TemplateViewConfiguration.PackageSetting` and
`TemplateViewConfiguration.PackageConfiguration` to represent paywalls
that support 1 or N packages
- Taken all common logic out of `Example1Template`
- Added new `PaywallViewMode` for upcoming "ramps" views
Facundo Menzella