Add some inits and tests

Sources/SendGridKit/Models/MailSettings.swift

@@ -50,6 +50,10 @@ public struct MailSettings: Codable, Sendable {
 public struct Setting: Codable, Sendable {
     /// Indicates if this setting is enabled.
     public var enable: Bool
+
+    public init(enable: Bool) {
+        self.enable = enable
+    }
 }
 
 public struct Footer: Codable, Sendable {

Sources/SendGridKit/Models/TrackingSettings.swift

@@ -44,6 +44,11 @@ public struct ClickTracking: Codable, Sendable {
 
     /// Indicates if this setting should be included in the text/plain portion of your email.
     public var enableText: Bool
+
+    public init(enable: Bool, enableText: Bool) {
+        self.enable = enable
+        self.enableText = enableText
+    }
 
     private enum CodingKeys: String, CodingKey {
         case enable

Tests/SendGridKitTests/SendGridTestsKit.swift

@@ -1,6 +1,6 @@
 import Testing
 import AsyncHTTPClient
-@testable import SendGridKit
+import SendGridKit
 
 struct SendGridKitTests {
     var client: SendGridClient
@@ -74,4 +74,24 @@ struct SendGridKitTests {
             true
         }
     }
+
+    @Test func dynamicTemplateData() async throws {
+        struct DynamicTemplateData: Codable, Sendable {
+            let text: String
+            let integer: Int
+            let double: Double
+        }
+        let dynamicTemplateData = DynamicTemplateData(text: "Hello, World!", integer: 42, double: 3.14)
+
+        // TODO: Replace the addresses with real email addresses
+        let personalization = Personalization(to: [EmailAddress("TO-ADDRESS")], subject: "Test Email", dynamicTemplateData: dynamicTemplateData)
+        let email = SendGridEmail(personalizations: [personalization], from: EmailAddress("FROM-ADDRESS"), content: [EmailContent("Hello, World!")])
+
+        try await withKnownIssue {
+            try await client.send(email: email)
+        } when: {
+            // TODO: Replace with `false` when you have a valid API key
+            true
+        }
+    }
 }