Support Proxy with Authentication

[dbssbu]

Is your feature request related to a problem? Please describe.

If you are behind a proxy, which causes authentication wi-import exists with an HTTP Proxy Authentication Required error:

Unexpected migration error.
[System.AggregateException] System.AggregateException: One or more errors occurred. (The proxy tunnel request to proxy 'http://proxy.domain.com:8080/' failed with status code '407'.")
 ---> System.Net.Http.HttpRequestException: The proxy tunnel request to proxy 'http://proxy.domain.com:8080/' failed with status code '407'."

Describe the solution you'd like

Option 1:
Use the authentication which is provided by the os

Option 2:
Add a commandline option "--proxyHost", allowing to specify a network proxy which to be abe to use a local proxy solution like genotrance/px

Example:

wi-import.exe --proxyHost http://localhost:3186

Describe alternatives you've considered

Migrate Data to a machine which is not behind a proxy

Additional context

[Alexander-Hjelm]

Marked as feature request. This will probably not be prioritized in the near future.