Add title parameter to Builder::addResource() and addResourceTemplate() (#310)

#301 added the `title` field to the `Resource`/`ResourceTemplate` schema
classes and the `McpResource`/`McpResourceTemplate` attributes, but the
manual registration methods on `Builder` were never updated — so manual
registration could not set a resource title, unlike tools and prompts.

Add a `$title` parameter between `$name` and `$description` (matching
`addTool()`/`addPrompt()`) and propagate it through `ArrayLoader` when
constructing the `Resource`/`ResourceTemplate` objects.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/Capability/Registry/Loader/ArrayLoader.php

@@ -56,6 +56,7 @@ final class ArrayLoader implements LoaderInterface
      *     handler: Handler,
      *     uri: string,
      *     name: ?string,
+     *     title: ?string,
      *     description: ?string,
      *     mimeType: ?string,
      *     size: int|null,
@@ -67,6 +68,7 @@ final class ArrayLoader implements LoaderInterface
      *     handler: Handler,
      *     uriTemplate: string,
      *     name: ?string,
+     *     title: ?string,
      *     description: ?string,
      *     mimeType: ?string,
      *     annotations: ?Annotations,
@@ -157,6 +159,7 @@ final class ArrayLoader implements LoaderInterface
                 $resource = new Resource(
                     uri: $data['uri'],
                     name: $name,
+                    title: $data['title'] ?? null,
                     description: $description,
                     mimeType: $data['mimeType'] ?? null,
                     annotations: $data['annotations'] ?? null,
@@ -197,6 +200,7 @@ final class ArrayLoader implements LoaderInterface
                 $template = new ResourceTemplate(
                     uriTemplate: $data['uriTemplate'],
                     name: $name,
+                    title: $data['title'] ?? null,
                     description: $description,
                     mimeType: $data['mimeType'] ?? null,
                     annotations: $data['annotations'] ?? null,