Feature/support mirror configuration

[jilliss]

Sometimes the address in the bucket becomes invalid or inaccessible
Or it may be slow to visit in some areas, such as China

I modified the url parsing script and now it will parse the mirrirs property in config.json. which is a map type property
Below is my config.jsonfile

{
  "SCOOP_BRANCH": "master",
  "lastupdate": "2021-07-11T10:33:24.5707181+08:00",
  "SCOOP_REPO": "https://github.com/lukesampson/scoop",
  "aria2-enabled": false,
  "list": "all",
  "proxy": "127.0.0.1:10809",
  "mirrors": {
    "http://repo.msys2.org/": " https://repo.huaweicloud.com/msys2/"
  }
}

At this time, scoop will download files from repo.huaweicloud.com instead of repo.msys2.org

[jilliss]

@r15ch13 Can you help me see if there is a problem?
There seems to be something wrong with the automated test script

[niheaven]

Please search https://github.com/chawyehsu/dorado for mirrors in China, and submit PR if any need.

[jilliss]

What I want is to change the location of the package download through configuration. Instead of downloading the json file in the bucket from gitee or from github
This PR is to replace the url by reading the configuration file

[StarsbySea]

I am very supportive of this addition, at times the network may incorrectly block certain domains and with this feature it is possible to configure mirror sites for certain domains so that the download and installation can run successfully. Of course a specific example is speeding up downloads from Github in China, but obviously there are many more use cases.
However, this may need more work, such as providing an option in the scoop config to manually add the domains that need to be mirrored. See the discussion at #4264 (comment).
I wonder if the original author would be interested in continuing to implement this feature?
Also please consider changing the target branch to develop