Show info if backup archive does not exist

scripts/Windows/Scripts/Context.ps1

@@ -104,15 +104,25 @@ class Context {
     }
 
     [void] Restore([string]$archivePath, [string]$destinationPath) {
-        if (-not (Test-Path -PathType Container $destinationPath)) {
-            New-Item -ItemType Directory "$destinationPath";
+        if (-not (Test-Path -PathType Leaf $archivePath)) {
+            Write-Information (
+                [string]::Join(
+                    "`n",
+                    @(
+                        "An archive at the specified path $archivePath does not exist.",
+                        "No restoration will be performed.")));
+        }
+        else {
+            if (-not (Test-Path -PathType Container $destinationPath)) {
+                New-Item -ItemType Directory "$destinationPath";
+            }
+    
+            Start-Process -WorkingDirectory "$destinationPath" `
+                -FilePath "7z"
+                -ArgumentList "x" `
+                -Wait `
+                -NoNewWindow;
         }
-
-        Start-Process -WorkingDirectory "$destinationPath" `
-            -FilePath "7z"
-            -ArgumentList "x" `
-            -Wait `
-            -NoNewWindow;
     }
 
     [string] GetTempDirectory() {