GHA: Windows: don't require git.icinga.com/packaging/windows-icinga2

"A little copying is better than a little dependency."
- https://www.youtube.com/watch?v=PAAkCSZUG1c&t=9m28s
(Gopherfest 2015 | Go Proverbs with Rob Pike)

.github/workflows/windows.yml

@@ -25,29 +25,24 @@ jobs:
 
     env:
       BITS: '${{ matrix.bits }}'
-      ICINGA_BUILD_TYPE: snapshot
-      UPSTREAM_GIT_URL: file://D:/a/icinga2/icinga2/.git
+      CMAKE_BUILD_TYPE: RelWithDebInfo
 
     steps:
       - name: Checkout HEAD
         uses: actions/checkout@v1
 
-      - name: windows-icinga2
-        run: |
-          git clone https://git.icinga.com/packaging/windows-icinga2.git
-
       - name: Build tools
         run: |
+          Set-PSDebug -Trace 1
           & .\doc\win-dev.ps1
 
-      - name: Source
-        run: |
-          git checkout -B master
-          cd windows-icinga2
-          & .\source.ps1
-
       - name: Binary
-        working-directory: windows-icinga2
         run: |
-          New-Item -ItemType Directory -Path 'C:\Program Files\Icinga2\WillBeRemoved' -ErrorAction SilentlyContinue
-          & .\build.ps1
+          Set-PSDebug -Trace 1
+          & .\tools\win32\load-vsenv.ps1
+          & powershell.exe .\tools\win32\configure.ps1
+          if ($LastExitCode -ne 0) { throw "Error during configure" }
+          & powershell.exe .\tools\win32\build.ps1
+          if ($LastExitCode -ne 0) { throw "Error during build" }
+          & powershell.exe .\tools\win32\test.ps1
+          if ($LastExitCode -ne 0) { throw "Error during test" }