feat(mobile): enhance download operations (#12973)

* add packages

* create download task

* show progress

* save video and image

* show progress info

* live photo wip

* download and link live photos

* Update list of assets

* wip

* correct progress

* add state to download

* revert unncessary change

* repository pattern

* translation

* remove unused code

* update method call from repository

* remove unused variable

* handle multiple livephotos download

* remove logging statement

* lint

* not removing all records

mobile/pubspec.yaml

@@ -32,7 +32,7 @@ dependencies:
   flutter_svg: ^2.0.9
   package_info_plus: ^8.0.1
   url_launcher: ^6.2.4
-  http: ^0.13.6
+  http: ^1.1.0
   cancellation_token_http: ^2.0.0
   easy_localization: ^3.0.3
   share_plus: ^10.0.0
@@ -56,6 +56,7 @@ dependencies:
   thumbhash: 0.1.0+1
   async: ^2.11.0
   dynamic_color: ^1.7.0 #package to apply system theme
+  background_downloader: ^8.5.5
 
   #image editing packages
   crop_image: ^1.0.13