feat: update dependencies, ui and linting

packages/imessage/lib/message_input.dart

@@ -2,7 +2,7 @@ import 'dart:io';
 
 import 'package:flutter/cupertino.dart';
 import 'package:image_picker/image_picker.dart';
-import 'package:stream_chat_flutter/stream_chat_flutter.dart'
+import 'package:stream_chat_flutter_core/stream_chat_flutter_core.dart'
     show Attachment, AttachmentFile, Message, StreamChannel;
 
 class MessageInput extends StatefulWidget {
@@ -59,28 +59,27 @@ class _MessageInputState extends State<MessageInput> {
                 );
                 await channel.sendMessage(message);
               },
-              child: Padding(
-                padding: const EdgeInsets.all(8.0),
+              child: const Padding(
+                padding: EdgeInsets.all(8.0),
                 child: Icon(
                   CupertinoIcons.camera_fill,
                   color: CupertinoColors.systemGrey,
-                  size: 35,
+                  size: 32,
                 ),
               ),
             ),
             Expanded(
               child: CupertinoTextField(
                 controller: textController,
+                maxLines: 10,
+                minLines: 1,
                 onSubmitted: (input) async {
                   await sendMessage(context, input);
                 },
-                placeholder: 'Text Message',
-                prefix: Padding(
-                  padding: const EdgeInsets.all(8.0),
-                  child: Text(
-                    '',
-                  ), //trick to add padding around  placeholder iMessage text
-                ),
+                placeholder: 'iMessage',
+                padding:
+                    const EdgeInsets.symmetric(vertical: 8, horizontal: 12),
+                suffixMode: OverlayVisibilityMode.editing,
                 suffix: GestureDetector(
                   onTap: () async {
                     if (textController.value.text.isNotEmpty) {
@@ -88,20 +87,16 @@ class _MessageInputState extends State<MessageInput> {
                       textController.clear();
                     }
                   },
-                  child: Padding(
-                    padding: const EdgeInsets.all(8.0),
-                    child: Icon(
-                      CupertinoIcons.arrow_up_circle_fill,
-                      color: CupertinoColors.activeGreen,
-                      size: 35,
-                    ),
+                  child: const Icon(
+                    CupertinoIcons.arrow_up_circle_fill,
+                    color: CupertinoColors.activeBlue,
+                    size: 35,
                   ),
                 ),
                 decoration: BoxDecoration(
-                    border: Border.all(
-                      color: CupertinoColors.systemGrey,
-                    ),
-                    borderRadius: BorderRadius.all(Radius.circular(35))),
+                  border: Border.all(color: CupertinoColors.systemGrey),
+                  borderRadius: const BorderRadius.all(Radius.circular(35)),
+                ),
               ),
             ),
           ],