Static file serving support for the Website service (#3)

This PR contains the work done to support the static files serving for the **Website** service, and also included the essential boilerplate assets from the **HTML5 boilerplate** project.

To provide further details about the work done:

* Serving: Added the `FileMiddleware` middlewqare to the router; `path`, `server name`, and `log level` now read from config with defaults.
* Library: Added the `StaticFile` enumeration with a `contentType` property, plus typed config-key/value constants and the `Configuration` dependency on WebsiteCore.
* Assets: Added the **HTML5 boilerplate** (HTML, CSS, JS, icons, manifest, robots) to the *Resources/Static* folder.
* Docker: Stage the Resources directory as read-only.
* Tests: Added a test plan, and a shared Xcode scheme.

Reviewed-on: rock-n-code/loud-amsterdam#3
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>

Services/Website/Package.swift

@@ -36,6 +36,7 @@ let package = Package(
         .executableTarget(
             name: "Website",
             dependencies: [
+                .byName(name: "WebsiteCore"),
                 .product(
                     name: "Configuration",
                     package: "swift-configuration"
@@ -49,17 +50,22 @@ let package = Package(
         ),
         .target(
             name: "WebsiteCore",
-            dependencies: [],
+            dependencies: [
+                .product(
+                    name: "Configuration",
+                    package: "swift-configuration"
+                ),
+            ],
             path: "Sources/Library"
         ),
         .testTarget(
             name: "WebsiteTests",
             dependencies: [
+                .byName(name: "Website"),
                 .product(
                     name: "HummingbirdTesting",
                     package: "hummingbird"
                 ),
-                .byName(name: "Website"),
             ],
             path: "Tests/App"
         ),