Examples: Add example using bundled resources

Author: euanh

Examples/HelloWorldWithResources/Package.swift

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+// swift-tools-version: 6.0
+
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the SwiftContainerPlugin open source project
+//
+// Copyright (c) 2025 Apple Inc. and the SwiftContainerPlugin project authors
+// Licensed under Apache License v2.0
+//
+// See LICENSE.txt for license information
+// See CONTRIBUTORS.txt for the list of SwiftContainerPlugin project authors
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+//===----------------------------------------------------------------------===//
+
+import PackageDescription
+
+let package = Package(
+    name: "hello-world",
+    platforms: [.macOS(.v14)],
+    dependencies: [
+        .package(url: "https://github.com/hummingbird-project/hummingbird.git", from: "2.1.0"),
+        .package(url: "https://github.com/apple/swift-container-plugin", from: "0.5.0"),
+    ],
+    targets: [
+        .executableTarget(
+            name: "hello-world",
+            dependencies: [.product(name: "Hummingbird", package: "hummingbird")],
+            resources: [.process("resources")]
+        )
+    ]
+)

Examples/HelloWorldWithResources/Sources/main.swift

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+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the SwiftContainerPlugin open source project
+//
+// Copyright (c) 2025 Apple Inc. and the SwiftContainerPlugin project authors
+// Licensed under Apache License v2.0
+//
+// See LICENSE.txt for license information
+// See CONTRIBUTORS.txt for the list of SwiftContainerPlugin project authors
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+//===----------------------------------------------------------------------===//
+
+import Foundation
+import Hummingbird
+import Logging
+
+let myos = ProcessInfo.processInfo.operatingSystemVersionString
+
+let router = Router()
+router.addMiddleware { LogRequestsMiddleware(.info) }
+router.get { _, _ in
+    let faces = [
+        "happy-cat-face",
+        "slightly-smiling-face",
+        "smiling-face-with-sunglasses",
+    ]
+
+    guard let resourceURL = Bundle.module.url(forResource: faces.randomElement(), withExtension: "jpg") else {
+        throw HTTPError(.internalServerError)
+    }
+
+    let image = try Data(contentsOf: resourceURL)
+
+    return Response(
+        status: .ok,
+        headers: [.contentType: "image/jpg"],
+        body: .init(byteBuffer: ByteBuffer(bytes: image))
+    )
+}
+
+let app = Application(
+    router: router,
+    configuration: .init(address: .hostname("0.0.0.0", port: 8080)),
+    logger: Logger(label: "hello-with-resources")
+)
+
+try await app.runService()