chore(scg): address pub publish warnings

Author: indrajit-roy-sc

scgateway/lib/color_ext.dart

@@ -1,10 +1,12 @@
+// ignore_for_file: deprecated_member_use
+
 import 'package:flutter/widgets.dart';
 
 extension ColorExt on Color {
   String toHex({bool leadingHashSign = true, bool includeAlpha = false}) =>
       '${leadingHashSign ? '#' : ''}'
-          '${includeAlpha ? alpha.toRadixString(16).padLeft(2, '0') : ''}'
-          '${red.toRadixString(16).padLeft(2, '0')}'
-          '${green.toRadixString(16).padLeft(2, '0')}'
-          '${blue.toRadixString(16).padLeft(2, '0')}';
-}
+      '${includeAlpha ? alpha.toRadixString(16).padLeft(2, '0') : ''}'
+      '${red.toRadixString(16).padLeft(2, '0')}'
+      '${green.toRadixString(16).padLeft(2, '0')}'
+      '${blue.toRadixString(16).padLeft(2, '0')}';
+}

scgateway/lib/scgateway_flutter_plugin.dart

@@ -1,6 +1,5 @@
 import 'dart:async';
 import 'dart:io';
-import 'dart:ui';
 import 'package:flutter/services.dart';
 import './color_ext.dart';
 
@@ -78,6 +77,7 @@ class ScgatewayFlutterPlugin {
       var setFlutterSdkVersion = await _channel.invokeMethod(
           'setFlutterSdkVersion',
           <String, dynamic>{"flutterSdkVersion": _flutterPluginVersion});
+      print("setFlutterSdkVersion: $setFlutterSdkVersion");
     } on PlatformException catch (e) {
       print(e.stacktrace);
     }

scgateway/pubspec.yaml

@@ -1,7 +1,6 @@
 name: scgateway_flutter_plugin
 description: Scgateway Flutter plugin.
 version: 0.0.1-alpha.1
-author: gatewaytech@smallcase.com
 homepage: https://github.com/smallcase/gw-mob-sdk-flutter
 
 # The following line prevents the package from being accidentally published to