Merge #16505: Changes verbosity of msbuild from quiet to normal in the appveyor script

0646ca5 Changes the verbosity of msbuild from quiet to normal in the appveyor script. Increasing the verbosity helps to identify the cause of build errors which is the main purpose of the appveyor script. (Aaron Clauson)

Pull request description:

  Increasing the verbosity helps to identify the cause of build errors which is the main purpose of the appveyor script.

  Partially in response to #16487 where the msbuild error is difficult to determine due to the `quiet` logging level.

ACKs for top commit:
  practicalswift:
    utACK 0646ca5
  MarcoFalke:
    ACK 0646ca5. Previously I had to ping sipsorcery every time an issue appeared, now I might be able to look it up myself.

Tree-SHA512: 28d505e3d370523058d6b55ac72fdafd89b451fdc3295e19500dc10a1d868487c62907d86befd0723f263d258a2917ad940b0350cb8e2e0a77799c8c7aa17ec6

Author: MarcoFalke

.appveyor.yml

@@ -33,7 +33,7 @@ before_build:
 - ps:  Start-Process clcache-server
 - ps:  fsutil behavior set disablelastaccess 0 # Enable Access time feature on Windows (for clcache)
 build_script:
-- cmd: msbuild /p:TrackFileAccess=false /p:CLToolExe=clcache.exe build_msvc\bitcoin.sln /m /v:q /nologo
+- cmd: msbuild /p:TrackFileAccess=false /p:CLToolExe=clcache.exe build_msvc\bitcoin.sln /m /v:n /nologo
 after_build:
 - ps:  fsutil behavior set disablelastaccess 1 # Disable Access time feature on Windows (better performance)
 - ps:  clcache -z