Add ability to personalize the site creation button style

Author: hichamboushaba

WordPressAuthenticator/Authenticator/WordPressAuthenticatorStyles.swift

@@ -107,6 +107,12 @@ public struct WordPressAuthenticatorStyle {
     ///
     public let prologueSecondaryButtonStyle: NUXButtonStyle?
 
+    /// Style: tertiary button on the prologue view
+    /// When `nil` it will use the default link style
+    /// Defaults to `nil`
+    ///
+    public let prologueTertiaryButtonStyle: NUXButtonStyle?
+
     /// Style: prologue top container child view controller
     /// When nil, `LoginProloguePageViewController` is displayed in the top container
     ///
@@ -163,6 +169,7 @@ public struct WordPressAuthenticatorStyle {
                 prologueButtonsBlurEffect: UIBlurEffect? = nil,
                 prologuePrimaryButtonStyle: NUXButtonStyle? = nil,
                 prologueSecondaryButtonStyle: NUXButtonStyle? = nil,
+                prologueTertiaryButtonStyle: NUXButtonStyle? = nil,
                 prologueTopContainerChildViewController: @autoclosure @escaping () -> UIViewController? = nil,
                 statusBarStyle: UIStatusBarStyle = .lightContent,
                 orDividerSeparatorColor: UIColor = .tertiaryLabel,
@@ -200,6 +207,7 @@ public struct WordPressAuthenticatorStyle {
         self.prologueButtonsBlurEffect = prologueButtonsBlurEffect
         self.prologuePrimaryButtonStyle = prologuePrimaryButtonStyle
         self.prologueSecondaryButtonStyle = prologueSecondaryButtonStyle
+        self.prologueTertiaryButtonStyle = prologueTertiaryButtonStyle
         self.prologueTopContainerChildViewController = prologueTopContainerChildViewController
         self.statusBarStyle = statusBarStyle
         self.orDividerSeparatorColor = orDividerSeparatorColor

WordPressAuthenticator/Signin/LoginPrologueViewController.swift

@@ -259,6 +259,7 @@ class LoginPrologueViewController: LoginViewController {
 
         let primaryButtonStyle = WordPressAuthenticator.shared.style.prologuePrimaryButtonStyle
         let secondaryButtonStyle = WordPressAuthenticator.shared.style.prologueSecondaryButtonStyle
+        let tertiaryButtonStyle = WordPressAuthenticator.shared.style.prologueTertiaryButtonStyle ?? NUXButtonStyle.linkButtonStyle
 
         setButtonViewMargins(forWidth: view.frame.width)
         let displayStrings = WordPressAuthenticator.shared.displayStrings
@@ -317,7 +318,7 @@ class LoginPrologueViewController: LoginViewController {
                                  isPrimary: false,
                                  configureBodyFontForTitle: true,
                                  accessibilityIdentifier: "Prologue Site Creation Guide button",
-                                 style: NUXButtonStyle.linkButtonStyle,
+                                 style: tertiaryButtonStyle,
                                  onTap: siteCreationGuideCallback())
         }()