Paywalls: markdown support (#2961)

This relies on `SwiftUI`'s automatic rendering of markdown when using
`Text(LocalizedStringKey)`

![Screenshot 2023-08-03 at 11 52
55](https://github.com/RevenueCat/purchases-ios/assets/685609/0f19be26-aaa1-4bb2-ab0f-e0b3b1396f0b)

RevenueCatUI/Data/TestData.swift

@@ -232,14 +232,14 @@ internal enum TestData {
                 termsOfServiceURL: URL(string: "https://revenuecat.com/tos")!
             ),
             localization: .init(
-                title: "How your free trial works",
+                title: "How your **free** trial works",
                 callToAction: "Start",
                 callToActionWithIntroOffer: "Start your {{ intro_duration }} free",
                 offerDetails: "Only {{ price }} per {{ period }}",
                 offerDetailsWithIntroOffer: "First {{ intro_duration }} free,\nthen {{ total_price_and_per_month }}",
                 features: [
                     .init(title: "Today",
-                          content: "Full access to 1000+ workouts plus free meal plan worth {{ price }}.",
+                          content: "Full access to 1000+ workouts plus _free_ meal plan worth {{ price }}.",
                           iconID: "tick"),
                     .init(title: "Day 7",
                           content: "Get a reminder about when your trial is about to end.",
@@ -313,17 +313,17 @@ internal enum TestData {
     }()
 
     static let localization1: PaywallData.LocalizedConfiguration = .init(
-        title: "Ignite your child's curiosity",
-        subtitle: "Get access to all our educational content trusted by thousands of parents.",
+        title: "Ignite your child's *curiosity*",
+        subtitle: "Get access to all our educational content trusted by **thousands** of parents.",
         callToAction: "Purchase for {{ price }}",
         callToActionWithIntroOffer: "Purchase for {{ price_per_month }} per month",
         offerDetails: "{{ price_per_month }} per month",
         offerDetailsWithIntroOffer: "Start your {{ intro_duration }} trial, then {{ price_per_month }} per month",
         features: []
     )
     static let localization2: PaywallData.LocalizedConfiguration = .init(
-        title: "Call to action for better conversion.",
-        subtitle: "Lorem ipsum is simply dummy text of the printing and typesetting industry.",
+        title: "Call to action for _better_ conversion.",
+        subtitle: "Lorem ipsum is simply dummy text of the ~printing and~ typesetting industry.",
         callToAction: "Subscribe for {{ price_per_month }}/mo",
         offerDetails: "{{ total_price_and_per_month }}",
         offerDetailsWithIntroOffer: "{{ total_price_and_per_month }} after {{ intro_duration }} trial",

RevenueCatUI/Templates/MultiPackageBoldTemplate.swift

@@ -59,13 +59,13 @@ struct MultiPackageBoldTemplate: TemplateViewType {
 
             Spacer()
 
-            Text(self.selectedLocalization.title)
+            Text(.init(self.selectedLocalization.title))
                 .foregroundColor(self.configuration.colors.text1Color)
                 .font(.largeTitle.bold())
 
             Spacer()
 
-            Text(self.selectedLocalization.subtitle ?? "")
+            Text(.init(self.selectedLocalization.subtitle ?? ""))
                 .foregroundColor(self.configuration.colors.text1Color)
                 .font(.title3)
 

RevenueCatUI/Templates/OnePackageStandardTemplate.swift

@@ -56,7 +56,7 @@ struct OnePackageStandardTemplate: TemplateViewType {
             self.headerImage
 
             Group {
-                Text(verbatim: self.localization.title)
+                Text(.init(self.localization.title))
                     .font(self.configuration.mode.titleFont)
                     .fontWeight(.heavy)
                     .padding(
@@ -66,7 +66,7 @@ struct OnePackageStandardTemplate: TemplateViewType {
                     )
 
                 if self.configuration.mode.displaySubtitle, let subtitle = self.localization.subtitle {
-                    Text(verbatim: subtitle)
+                    Text(.init(subtitle))
                         .font(self.configuration.mode.subtitleFont)
                 }
             }

RevenueCatUI/Templates/OnePackageWithFeaturesTemplate.swift

@@ -41,7 +41,7 @@ struct OnePackageWithFeaturesTemplate: TemplateViewType {
                     .cornerRadius(8)
             }
 
-            Text(self.localization.title)
+            Text(.init(self.localization.title))
                 .font(.title)
                 .foregroundStyle(self.configuration.colors.text1Color)
                 .multilineTextAlignment(.center)
@@ -146,14 +146,14 @@ private struct FeatureView: View {
                     self.icon
                 }
 
-                Text(self.feature.title)
+                Text(.init(self.feature.title))
                     .foregroundStyle(self.colors.text1Color)
                     .font(.headline)
                     .frame(maxWidth: .infinity, alignment: .leading)
             }
 
             if let content = self.feature.content {
-                Text(content)
+                Text(.init(content))
                     .foregroundStyle(self.colors.accent2Color)
                     .font(.body)
             }

RevenueCatUI/Views/IntroEligibilityStateView.swift

@@ -33,7 +33,7 @@ struct IntroEligibilityStateView: View {
     }
 
     var body: some View {
-        Text(self.text)
+        Text(.init(self.text))
             // Hide until we've determined intro eligibility
             // only if there is a custom intro text.
             .withPendingData(self.needsToWaitForIntroEligibility, alignment: self.alignment)