TF-2042 Add event attendees information widget

(cherry picked from commit 5ee6fcebb2d35352d55fa84a70020d4c2ad03924)

lib/features/email/presentation/extensions/list_attendee_extension.dart

@@ -0,0 +1,19 @@
+
+import 'package:collection/collection.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/attendee/calendar_attendee.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/calendar_organizer.dart';
+
+extension ListAttendeeExtension on List<CalendarAttendee> {
+
+  String get mailtoAsString {
+    return map((attendee) => attendee.mailto?.mailAddress.value)
+      .whereNotNull()
+      .join(', ');
+  }
+
+  List<CalendarAttendee> withoutOrganizer(CalendarOrganizer organizer) {
+  return where((attendee) => attendee.mailto?.mailAddress != organizer.mailto)
+    .whereNotNull()
+    .toList();
+  }
+}

lib/features/email/presentation/styles/event_attendee_information_widget_styles.dart

@@ -0,0 +1,5 @@
+
+class EventAttendeeInformationWidgetStyles {
+  static const double maxWidth = 100;
+  static const double textSize = 16;
+}

lib/features/email/presentation/widgets/calendar_event/event_attendee_information_widget.dart

@@ -0,0 +1,61 @@
+
+import 'package:core/presentation/extensions/color_extension.dart';
+import 'package:flutter/material.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/attendee/calendar_attendee.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/calendar_organizer.dart';
+import 'package:tmail_ui_user/features/email/presentation/extensions/list_attendee_extension.dart';
+import 'package:tmail_ui_user/features/email/presentation/styles/event_attendee_information_widget_styles.dart';
+import 'package:tmail_ui_user/main/localizations/app_localizations.dart';
+
+class EventAttendeeInformationWidget extends StatelessWidget {
+
+  final List<CalendarAttendee> attendees;
+  final CalendarOrganizer organizer;
+
+  const EventAttendeeInformationWidget({
+    super.key,
+    required this.attendees,
+    required this.organizer
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Row(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        SizedBox(
+          width: EventAttendeeInformationWidgetStyles.maxWidth,
+          child: Text(
+            AppLocalizations.of(context).who,
+            style: const TextStyle(
+              fontSize: EventAttendeeInformationWidgetStyles.textSize,
+              fontWeight: FontWeight.w500,
+              color: AppColor.colorSubTitleEventActionText
+            ),
+          ),
+        ),
+        Expanded(child: RichText(
+          text: TextSpan(
+            style: const TextStyle(
+              fontSize: EventAttendeeInformationWidgetStyles.textSize,
+              fontWeight: FontWeight.w500,
+              color: Colors.black
+            ),
+            children: [
+              TextSpan(
+                text: '${organizer.mailto?.value} (${AppLocalizations.of(context).organizer})',
+                style: const TextStyle(
+                  color: AppColor.colorOrganizerMailto,
+                  fontSize: EventAttendeeInformationWidgetStyles.textSize,
+                  fontWeight: FontWeight.w500
+                ),
+              ),
+              const TextSpan(text: ', '),
+              TextSpan(text: attendees.withoutOrganizer(organizer).mailtoAsString)
+            ]
+          )
+        ))
+      ],
+    );
+  }
+}