Aria2 support for download action

[Ash258]

Aria2 usage is now initialized. There are few problems that needs to be investigated

Starting download with aria2 ...
Exception caught
Exception: [download_helper.cc:563] errorCode=1 Failed to open the file /SCOOP/cache\xmake.txt, cause: File not found or it is a directory

ERROR Download failed! (Error 1) An unknown error occurred
ERROR https://github.com/xmake-io/xmake/releases/download/v2.2.7/xmake-v2.2.7.win64.zip
    referer=https://github.com/xmake-io/xmake/releases/download/v2.2.7/
    dir=/SCOOP/cache
    out=xmake#DL#https_github.com_xmake-io_xmake_releases_download_v2.2.7_xmake-v2.2.7.win64.zip

ERROR & '/usr/bin/aria2c' --input-file='/SCOOP/cache\xmake.txt' --user-agent='Scoop/1.0 (+http://scoop.sh/) PowerShell/6.2 (Windows NT 4.9; Core)' --allow-overwrite=true --auto-file-renaming=false --retry-wait=2 --split=5 --max-connection-per-server=5 --min-split-size=5M --console-log-level=warn --enable-color=false --no-conf=true --follow-metalink=true --metalink-preferred-protocol=https --min-tls-version=TLSv1.2 --stop-with-process=1 --continue
The expression after '&' in a pipeline element produced an object that was not valid. It must result in a command name, a script block, or a CommandInfo object.
+     & "$env:COMSPEC" /c $cmd
+ CategoryInfo          : InvalidOperation: (:String) [], RuntimeException
+ FullyQualifiedErrorId : BadExpression
 

Please try again or create a new issue by using the following link and paste your console output:
https:////
PS /> ls /SCOOP/cache/
xmake.txt
PS /> cat /SCOOP/cache/xmake.txt
https://github.com/xmake-io/xmake/releases/download/v2.2.7/xmake-v2.2.7.win64.zip
    referer=https://github.com/xmake-io/xmake/releases/download/v2.2.7/
    dir=/SCOOP/cache
    out=xmake#DL#https_github.com_xmake-io_xmake_releases_download_v2.2.7_xmake-v2.2.7.win64.zip

[Ash258]

Problem is mix of / and \ in file param

[Ash258]

[Ash258]

As soon as upstream is fixed I need to think about new way of returning broken URLs

[Ash258]

Upstream change is in develop

[Ash258]

This could be implemented after Install refactor. Current aria2 download function is not optimal and aria2 factor is negligible. Usually this is due to taken down of artifacts, network issues, ....