apply swift-format (#380)

* apply swift-format

* use swift-format script from swift-nio project

Author: sebsto

Plugins/AWSLambdaPackager/PluginUtils.swift

@@ -13,9 +13,9 @@
 //===----------------------------------------------------------------------===//
 
 import Dispatch
+import Foundation
 import PackagePlugin
 import Synchronization
-import Foundation
 
 @available(macOS 15.0, *)
 struct Utils {

Sources/AWSLambdaRuntimeCore/LambdaRuntime.swift

@@ -14,15 +14,15 @@
 
 import Foundation
 import Logging
-import NIOCore
 import NIOConcurrencyHelpers
+import NIOCore
 
 // We need `@unchecked` Sendable here, as `NIOLockedValueBox` does not understand `sending` today.
 // We don't want to use `NIOLockedValueBox` here anyway. We would love to use Mutex here, but this
 // sadly crashes the compiler today.
 public final class LambdaRuntime<Handler>: @unchecked Sendable where Handler: StreamingLambdaHandler {
     // TODO: We want to change this to Mutex as soon as this doesn't crash the Swift compiler on Linux anymore
-    let handlerMutex: NIOLockedValueBox<Optional<Handler>>
+    let handlerMutex: NIOLockedValueBox<Handler?>
     let logger: Logger
     let eventLoop: EventLoop