perf: cache RelativeDateTimeFormatter; add .DS_Store to .gitignore

Co-authored-by: robonen <26167508+robonen@users.noreply.github.com>

.gitignore

@@ -8,5 +8,9 @@ DerivedData/
 *.ipa
 *.dSYM.zip
 *.dSYM
+# Swift Package Manager
 .build/
 .swiftpm/
+
+# macOS
+.DS_Store

Mayday/Views/Notifications/NotificationsView.swift

@@ -117,8 +117,12 @@ struct NotificationRowView: View {
 
 extension Date {
     var relativeFormatted: String {
+        Date.relativeDateTimeFormatter.localizedString(for: self, relativeTo: Date())
+    }
+
+    private static let relativeDateTimeFormatter: RelativeDateTimeFormatter = {
         let formatter = RelativeDateTimeFormatter()
         formatter.locale = Locale(identifier: "ru_RU")
-        return formatter.localizedString(for: self, relativeTo: Date())
-    }
+        return formatter
+    }()
 }

MaydayLiveActivity/MaydayLiveActivityLiveActivity.swift

@@ -124,8 +124,12 @@ struct MaydayLiveActivityLiveActivity: Widget {
 
 extension Date {
     var relativeFormatted: String {
+        Date.relativeDateTimeFormatter.localizedString(for: self, relativeTo: Date())
+    }
+
+    private static let relativeDateTimeFormatter: RelativeDateTimeFormatter = {
         let formatter = RelativeDateTimeFormatter()
         formatter.locale = Locale(identifier: "ru_RU")
-        return formatter.localizedString(for: self, relativeTo: Date())
-    }
+        return formatter
+    }()
 }