Implemented Video Upload and Player (#2)

* Implementing video upload features

* setup image resize processor

* Add video thumbnail with duration and icon

* Fixed issue with video upload timeout and upper case file type on ios

* Added video player page

* Added video player page

* Fixing video player not play on ios

* Added partial file streaming for ios/android video request

* Added nginx as proxy server for better file serving

* update nginx and docker-compose file

* Video player working correctly

* Video player working correctly

* Split duration to the second

mobile/lib/utils/files_helper.dart

@@ -1,10 +1,12 @@
+import 'package:flutter/material.dart';
 import 'package:path/path.dart' as p;
 
 class FileHelper {
   static getMimeType(String filePath) {
+    debugPrint(filePath);
     var fileExtension = p.extension(filePath).split(".")[1];
 
-    switch (fileExtension) {
+    switch (fileExtension.toLowerCase()) {
       case 'gif':
         return {"type": "image", "subType": "gif"};