Added comments

lib/core/constants.dart

@@ -1,19 +1,41 @@
 import 'package:rate_my_app/rate_my_app.dart';
 
+/// A utility class that holds constant values and configuration settings
+/// used throughout the application, such as external links, email addresses,
+/// and timing parameters for UI elements.
+///
+/// This class also provides an instance of [RateMyApp] for managing
+/// in-app rating prompts.
 class Constants {
+  /// Indicates the current development phase of the app
   static const String appDevPhase = 'Beta';
 
+  /// Links to various social media profiles and resources related to the app.
+  /// URL to my Instagram profile
   static const String kInstagramLink = 'https://instagram.felixkirchner.de';
+
+  /// URL to my GitHub profile
   static const String kGithubLink = 'https://github.felixkirchner.de';
+
+  /// URL to the GitHub issues page for reporting bugs or requesting features.
   static const String kGithubIssuesLink =
       'https://cabo-counter-issues.felixkirchner.de';
+
+  /// URL to the GitHub wiki for additional documentation and guides.
   static const String kGithubWikiLink =
       'https://cabo-counter-wiki.felixkirchner.de';
+
+  /// Official email address for user inquiries and support.
   static const String kEmail = 'cabocounter@felixkirchner.de';
+
+  /// URL to the app's privacy policy page.
   static const String kPrivacyPolicyLink =
       'https://cabo-counter-datenschutz.felixkirchner.de';
-  static const String kImprintLink = 'https://impressum.felixkirchner.de';
 
+  /// URL to the app's imprint page, containing legal information.
+  static const String kLegalLink = 'https://impressum.felixkirchner.de';
+
+  /// Instance of [RateMyApp] configured to prompt users for app store ratings.
   static RateMyApp rateMyApp = RateMyApp(
       appStoreIdentifier: '6747105718',
       minDays: 15,