APPVEYOR: Reorder build platforms to be: macOS, Ubuntu, and Windows

- This exercises macOS first which is more likely to have build issues than
   Linux or Windows.
- Fix the format of the date used in filenames and commit messages
- Only include the platform simulator binaries in the created tarball

appveyor.yml

@@ -1,7 +1,7 @@
 image:
-  - Visual Studio 2015
-  - Ubuntu2004
   - macos-monterey
+  - Ubuntu2004
+  - Visual Studio 2015
 
 platform:
   - x86
@@ -58,7 +58,7 @@ on_success:
   - ps: |
         $id_line = Select-String -Path $commit_id_file -Pattern 'SIM_GIT_COMMIT_ID'
         $id = $id_line.Line.SubString($id_line.line.IndexOf("SIM_GIT_COMMIT_ID") + 18, 8)
-        $datetime = Get-Date -Format "yyyy-mm-dd_hh-mm-ss"
+        $datetime = Get-Date -Format "yyyy-MM-dd_HH-mm-ss"
         $version_major = (Select-String -Path 'sim_rev.h' -Pattern '#define\s+SIM_MAJOR\s+(\d+)').Matches.Groups[1].Value
         $version_minor = (Select-String -Path 'sim_rev.h' -Pattern '#define\s+SIM_MINOR\s+(\d+)').Matches.Groups[1].Value
         $version_mode =  (Select-String -Path 'sim_rev.h' -Pattern '#define\s+SIM_VERSION_MODE\s+"(.+?)"').Matches.Groups[1].Value
@@ -75,7 +75,7 @@ on_success:
           Compress-Archive -Path ..\BIN\NT\Win32-Release\*.exe -DestinationPath "$pkg_filename.zip"
         } else {
           pushd ../BIN
-          tar -cvzf ../Development-Binaries/$pkg_filename.tgz --exclude=buildtools '--exclude=*-build' ../BIN *
+          tar -cvzf ../Development-Binaries/$pkg_filename.tgz --exclude=buildtools '--exclude=*-build' *
           popd
         }
         "$platform Build results for simh Commit: https://github.com/simh/simh/commit/$id" | Out-File -FilePath ../pkg_commit_message -Encoding ascii