feat: implement core notification functionality for iOS and Android - Add settings management, proper error handling, and platform-specific implementations

ios/Plugin/DailyNotificationLogger.swift

@@ -0,0 +1,44 @@
+/**
+ * DailyNotificationLogger.swift
+ * Daily Notification Plugin for Capacitor
+ *
+ * Provides logging functionality for the notification plugin
+ */
+
+import Foundation
+
+/// Logger utility for the DailyNotification plugin
+///
+/// Provides structured logging capabilities with different severity levels
+/// and automatic file/line/function information.
+public class DailyNotificationLogger {
+    /// Shared instance for singleton access
+    public static let shared = DailyNotificationLogger()
+    
+    /// Available logging levels
+    public enum Level: String {
+        case debug, info, warning, error
+    }
+    
+    private init() {}
+    
+    /// Log a message with the specified severity level
+    /// - Parameters:
+    ///   - level: The severity level of the log
+    ///   - message: The message to log
+    ///   - file: The file where the log was called (automatic)
+    ///   - function: The function where the log was called (automatic)
+    ///   - line: The line number where the log was called (automatic)
+    public func log(
+        _ level: Level,
+        _ message: String,
+        file: String = #file,
+        function: String = #function,
+        line: Int = #line
+    ) {
+        #if DEBUG
+        let fileName = (file as NSString).lastPathComponent
+        print("[\(level.rawValue.uppercased())] [\(fileName):\(line)] \(function): \(message)")
+        #endif
+    }
+}