Added sharing option in fileViewer

lib/widget/fileViewer.dart

@@ -5,10 +5,12 @@ import 'package:better_open_file/better_open_file.dart';
 import 'package:flutter/material.dart';
 import 'package:photo_view/photo_view.dart';
 import 'package:provider/provider.dart';
+import 'package:share_plus/share_plus.dart';
 import 'package:syncfusion_flutter_pdfviewer/pdfviewer.dart';
 
 import '../storage/base/settingsProvider.dart';
 import 'placeholderView.dart';
+import 'sharePositionOrigin.dart';
 
 class FileViewer extends StatefulWidget {
   final String path;
@@ -43,6 +45,15 @@ class _FileViewerState extends State<FileViewer> {
               ),
               icon: const Icon(Icons.open_in_new)
           ),
+          IconButton(
+            onPressed: () {
+              Share.shareXFiles(
+                  [XFile(widget.path)],
+                  sharePositionOrigin: SharePositionOrigin.get(context),
+              );
+            },
+            icon: const Icon(Icons.share_outlined),
+          ),
           ...actions
         ],
       );