add release script

release.ps1

@@ -0,0 +1,31 @@
+param(
+    [string]$VersionString
+)
+
+if (-not $VersionString) {
+    Write-Error "Version string is required as the first argument."
+    exit 1
+}
+
+$csprojPath = "Dalamud/Dalamud.csproj"
+
+if (-not (Test-Path $csprojPath)) {
+    Write-Error "Cannot find Dalamud.csproj at the specified path."
+    exit 1
+}
+
+# Update the version in the csproj file
+(Get-Content $csprojPath) -replace '<DalamudVersion>.*?</DalamudVersion>', "<DalamudVersion>$VersionString</DalamudVersion>" | Set-Content $csprojPath
+
+# Commit the change
+git add $csprojPath
+git commit -m "build: $VersionString"
+
+# Get the current branch
+$currentBranch = git rev-parse --abbrev-ref HEAD
+
+# Create a tag
+git tag -a -m "v$VersionString" $VersionString
+
+# Push atomically
+git push origin $currentBranch $VersionString