CI: Add PowerShell release script for Windows CI

Author: James-Frowen

.release.ps1

@@ -0,0 +1,23 @@
+# PowerShell version of .release.sh for Windows CI
+
+Write-Host "Running release script with [SOURCE_PATH=$env:SOURCE_PATH, TARGET_PATH=$env:TARGET_PATH, args=$args]"
+
+# Extract version (remove -xxx suffix)
+$VER = $args[0] -replace "-[a-z]*", ""
+
+# Update AssemblyVersion in AssemblyInfo.cs file
+$assemblyInfoPath = Join-Path $env:SOURCE_PATH "Runtime\AssemblyInfo.cs"
+(Get-Content $assemblyInfoPath) `
+| ForEach-Object { $_ -replace 'AssemblyVersion\(".*"\)', "AssemblyVersion(`"$VER`")" } `
+| Set-Content $assemblyInfoPath
+
+# unity-packer equivalent command
+$unityPackerArgs = @(
+    "pack", "NetworkPositionSync.unitypackage",
+    "${env:SOURCE_PATH}\Runtime", "${env:TARGET_PATH}\Runtime",
+    "${env:SOURCE_PATH}\CHANGELOG.md", "${env:TARGET_PATH}\CHANGELOG.md",
+    "${env:SOURCE_PATH}\LICENSE", "${env:TARGET_PATH}\LICENSE",
+    "${env:SOURCE_PATH}\package.json", "${env:TARGET_PATH}\package.json",
+    "${env:SOURCE_PATH}\Readme.txt", "${env:TARGET_PATH}\Readme.txt"
+)
+unity-packer @unityPackerArgs