[tor-bugs] #25549 [Core Tor/Tor]: Add tor CI config for AppVeyor

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#25549: Add tor CI config for AppVeyor
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 Reporter:  isis                 |          Owner:  (none)
     Type:  enhancement          |         Status:  new
 Priority:  Medium               |      Milestone:  Tor: 0.3.4.x-final
Component:  Core Tor/Tor         |        Version:
 Severity:  Normal               |     Resolution:
 Keywords:  tor-ci, tor-testing  |  Actual Points:
Parent ID:  #25550               |         Points:
 Reviewer:                       |        Sponsor:  Sponsor3
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Comment (by saper):

 Working on it, got basic compilation using msys64 provided libraries
 working.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25549#comment:3>
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