Helper function for execution of xcversion with more than one attempt. (#2700)

* Invoke-XCVersion function has been created

* PR Comments resolving

* $result.Output | ForEach-Object { Write-Host $_ } has been added

* $PauseDuration -> $PauseDurationSecs

* Fixing the attempt indexing

images/macos/helpers/Xcode.Helpers.psm1

@@ -121,4 +121,34 @@ function Get-XcodePairsList {
         $result += "$watchName $phoneName"
     }
     return $result
+}
+
+#Helper function for execution of xcversion due to: https://github.com/fastlane/fastlane/issues/18161
+function Invoke-XCVersion {
+    param(
+        [Parameter(Mandatory)]
+        [string] $Arguments,
+        [Parameter()]
+        [int] $RetryAttempts = 7,
+        [Parameter()]
+        [int] $PauseDurationSecs = 1
+    )
+    
+    $Command = "xcversion $Arguments"
+    Write-Host "Execute [$Command]"
+    for ($Attempt=1; $Attempt -le $RetryAttempts; $Attempt++) {
+        Write-Host "Current attempt: [$Attempt]"
+        $result = Get-CommandResult -Command $Command -Multiline
+        Write-Host "Exit code: [$($result.ExitCode)]"
+        Write-Host "Output message: "
+        $result.Output | ForEach-Object { Write-Host $_ }
+        if ($result.ExitCode -ne 0) {
+            Start-Sleep -Seconds $PauseDurationSecs
+        } else {
+            return $result.Output
+        }
+    }
+    if ($result.ExitCode -ne 0) {
+        throw "Command [$Command] has finished with non-zero exit code."
+    } 
 }

images/macos/helpers/Xcode.Installer.psm1

@@ -27,10 +27,8 @@ function Invoke-DownloadXcodeArchive {
     if (-not $resolvedVersion) {
         throw "Version '$Version' can't be matched to any available version"
     }
-
-    # TO-DO: Consider replacing of xcversion with own implementation
     Write-Host "Downloading Xcode $resolvedVersion"
-    Invoke-ValidateCommand "xcversion install '$resolvedVersion' --no-install"
+    Invoke-XCVersion -Arguments "install '$resolvedVersion' --no-install"
 }
 
 function Resolve-ExactXcodeVersion {
@@ -51,7 +49,7 @@ function Resolve-ExactXcodeVersion {
 }
 
 function Get-AvailableXcodeVersions {
-    $rawVersionsList = & xcversion list | ForEach-Object { $_.Trim() } | Where-Object { $_ -match "^\d" }
+    $rawVersionsList = Invoke-XCVersion -Arguments "list" | ForEach-Object { $_.Trim() } | Where-Object { $_ -match "^\d" }
     $availableVersions = $rawVersionsList | ForEach-Object {
         $partStable,$partMajor = $_.Split(" ", 2)
         $semver = $stableSemver = [SemVer]::Parse($partStable)