[Issue 18455] New: CI should build Windows debug variant

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18455

          Issue ID: 18455
           Summary: CI should build Windows debug variant
           Product: D
           Version: D2
          Hardware: x86
                OS: Windows
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: johnnymarler at gmail.com

Since the windows debug build is broken...my guess is that none of our CI
machines are building windows in debug mode.  Probably a good idea to add this.

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