ci(tools): add stale cache cleanup script

.github/stale_cache_cleanup.ps1

@@ -0,0 +1,75 @@
+$totalClearedSize = 0
+$cacheList = gh cache list --json id,key,ref,sizeInBytes,createdAt | ConvertFrom-Json
+
+# List of keys to process
+$keyPatterns = @(
+    "Windows-x64-nuget",
+    "Windows-x64-maadeps",
+    "Windows-arm64-nuget",
+    "Windows-arm64-maadeps",
+    "macOS-x64-maadeps",
+    "macOS-arm64-maadeps",
+    "Linux-x64-maadeps",
+    "Linux-arm64-maadeps",
+    "Smoke-testing"
+)
+
+# Filter caches matching any of our key patterns
+$matchingCaches = $cacheList | Where-Object { 
+    $cache = $_
+    ($keyPatterns | Where-Object { $cache.key -like "*$_*" }).Count -gt 0 
+}
+
+# Get unique branch references from the matching caches
+$branches = $matchingCaches | Select-Object -Property ref -Unique | ForEach-Object { $_.ref }
+
+Write-Output "Found caches across $($branches.Count) branches"
+
+foreach ($branch in $branches) {
+    # Extract branch name from ref for display
+    $branchName = $branch -replace "refs/heads/", ""
+    if ($branch -match "refs/pull/(\d+)/merge") {
+        $branchName = "PR #$($matches[1])"
+    }
+    
+    Write-Output "Processing caches for branch: $branchName"
+    
+    # Filter for current branch caches
+    $branchCaches = $matchingCaches | Where-Object { $_.ref -eq $branch }
+    
+    foreach ($pattern in $keyPatterns) {
+        Write-Output "  Processing $branchName branch caches for pattern: $pattern"
+        
+        # Filter for caches matching the current key pattern within branch
+        $patternCaches = $branchCaches | Where-Object { $_.key -like "*$pattern*" }
+
+        if (-not $patternCaches) {
+            Write-Output "    No $branchName branch caches found for pattern: $pattern"
+            continue
+        }
+
+        # Sort by creation time (newest first)
+        $sortedCaches = $patternCaches | Sort-Object -Property createdAt -Descending
+
+        # Keep the first one (latest) and delete the rest
+        $latestCache = $sortedCaches[0]
+        Write-Output "    Keeping latest cache for $branchName/${pattern}: '$($latestCache.key)' (ID: $($latestCache.id))"
+
+        # Delete all except the latest one
+        for ($i = 1; $i -lt $sortedCaches.Count; $i++) {
+            $cache = $sortedCaches[$i]
+            $cacheId = $cache.id
+            $cacheKey = $cache.key
+
+            Write-Output "    Deleting cache for $branchName/${pattern}: '$cacheKey' (ID: $cacheId)"
+            #gh cache delete $cacheId
+            
+            $totalClearedSize += $cache.sizeInBytes
+        }
+    }
+    
+    Write-Output ""
+}
+
+$formattedSize = "{0:N2}" -f ($totalClearedSize / 1MB)
+Write-Output "Total cleared size: $formattedSize MB"