Import HTTP resumable upload sample code

.spi.yml

@@ -1,4 +1,4 @@
 version: 1
 builder:
   configs:
-    - documentation_targets: [NIOExtras, NIOHTTPCompression, NIOSOCKS, NIOHTTPTypes, NIOHTTPTypesHTTP1, NIOHTTPTypesHTTP2]
+    - documentation_targets: [NIOExtras, NIOHTTPCompression, NIOSOCKS, NIOHTTPTypes, NIOHTTPTypesHTTP1, NIOHTTPTypesHTTP2, NIOResumableUpload]

Package.swift

@@ -151,6 +151,21 @@ var targets: [PackageDescription.Target] = [
         dependencies: [
             "NIOHTTPTypesHTTP2",
         ]),
+    .target(
+        name: "NIOResumableUpload",
+        dependencies: [
+            "NIOHTTPTypes",
+            .product(name: "HTTPTypes", package: "swift-http-types"),
+            .product(name: "NIOCore", package: "swift-nio"),
+            .product(name: "StructuredFieldValues", package: "swift-http-structured-headers"),
+            .product(name: "Atomics", package: "swift-atomics"),
+        ]),
+    .testTarget(
+        name: "NIOResumableUploadTests",
+        dependencies: [
+            "NIOResumableUpload",
+            .product(name: "NIOEmbedded", package: "swift-nio"),
+        ]),
 ]
 
 let package = Package(
@@ -162,12 +177,15 @@ let package = Package(
         .library(name: "NIOHTTPTypes", targets: ["NIOHTTPTypes"]),
         .library(name: "NIOHTTPTypesHTTP1", targets: ["NIOHTTPTypesHTTP1"]),
         .library(name: "NIOHTTPTypesHTTP2", targets: ["NIOHTTPTypesHTTP2"]),
+        .library(name: "NIOResumableUpload", targets: ["NIOResumableUpload"]),
     ],
     dependencies: [
         .package(url: "https://github.com/apple/swift-nio.git", from: "2.42.0"),
         .package(url: "https://github.com/apple/swift-nio-http2.git", from: "1.27.0"),
         .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.0.0"),
         .package(url: "https://github.com/apple/swift-http-types", from: "1.0.0"),
+        .package(url: "https://github.com/apple/swift-http-structured-headers.git", from: "1.0.0"),
+        .package(url: "https://github.com/apple/swift-atomics.git", from: "1.2.0"),
     ],
     targets: targets
 )

README.md

@@ -57,3 +57,4 @@ On the [`nio-extras-0.1`](https://github.com/apple/swift-nio-extras/tree/nio-ext
 - [`HTTPToHTTP1ServerCodec`](Sources/NIOHTTPTypesHTTP1/HTTPToHTTP1Codec.swift) A `ChannelHandler` that translates shared HTTP types into HTTP/1 messages for the server side for compatibility purposes.
 - [`HTTP2FramePayloadToHTTPClientCodec`](Sources/NIOHTTPTypesHTTP2/HTTP2ToHTTPCodec.swift) A `ChannelHandler` that translates HTTP/2 concepts into shared HTTP types for the client side.
 - [`HTTP2FramePayloadToHTTPServerCodec`](Sources/NIOHTTPTypesHTTP2/HTTP2ToHTTPCodec.swift) A `ChannelHandler` that translates HTTP/2 concepts into shared HTTP types for the server side.
+- [`HTTPResumableUploadHandler`](Sources/NIOResumableUpload/HTTPResumableUploadHandler.swift) A `ChannelHandler` that translates HTTP resumable uploads to regular uploads.