Correctly kill processes spawned by mac-crafter if mac-crafter quits/…

…is killed/etc

Signed-off-by: Claudio Cambra <claudio.cambra@nextcloud.com>

admin/osx/mac-crafter/Sources/Utils/Shell.swift

@@ -14,31 +14,40 @@
 
 import Foundation
 
+var task: Process?
+
 @discardableResult
 func run(
     _ launchPath: String,
     _ args: [String],
     env: [String: String]? = nil,
     quiet: Bool = false
 ) -> Int32 {
-    let task = Process()
-    task.launchPath = launchPath
-    task.arguments = args
+    defer { task = nil }
+    task = Process()
+
+    signal(SIGINT) { _ in
+        task?.terminate()  // Send terminate signal to the task
+        exit(0)            // Exit the script after cleanup
+    }
+
+    task?.launchPath = launchPath
+    task?.arguments = args
 
     if let env,
-       let combinedEnv = task.environment?.merging(env, uniquingKeysWith: { (_, new) in new })
+       let combinedEnv = task?.environment?.merging(env, uniquingKeysWith: { (_, new) in new })
     {
-        task.environment = combinedEnv
+        task?.environment = combinedEnv
     }
 
     if quiet {
-        task.standardOutput = nil
-        task.standardError = nil
+        task?.standardOutput = nil
+        task?.standardError = nil
     }
 
-    task.launch()
-    task.waitUntilExit()
-    return task.terminationStatus
+    task?.launch()
+    task?.waitUntilExit()
+    return task?.terminationStatus ?? 1
 }
 
 func run(