chore: remove final keyword on attributes classes (#240)

Co-authored-by: Jonathan Renard <jRenard@PRESTAMAC-175.local>

Author: fox-john

src/Capability/Attribute/McpPrompt.php

@@ -20,7 +20,7 @@
  * @author Kyrian Obikwelu <koshnawaza@gmail.com>
  */
 #[\Attribute(\Attribute::TARGET_METHOD | \Attribute::TARGET_CLASS)]
-final class McpPrompt
+class McpPrompt
 {
     /**
      * @param ?string               $name        overrides the prompt name (defaults to method name)

src/Capability/Attribute/McpResource.php

@@ -21,7 +21,7 @@
  * @author Kyrian Obikwelu <koshnawaza@gmail.com>
  */
 #[\Attribute(\Attribute::TARGET_METHOD | \Attribute::TARGET_CLASS)]
-final class McpResource
+class McpResource
 {
     /**
      * @param string                $uri         The specific URI identifying this resource instance. Must be unique within the server.

src/Capability/Attribute/McpResourceTemplate.php

@@ -20,7 +20,7 @@
  * @author Kyrian Obikwelu <koshnawaza@gmail.com>
  */
 #[\Attribute(\Attribute::TARGET_METHOD | \Attribute::TARGET_CLASS)]
-final class McpResourceTemplate
+class McpResourceTemplate
 {
     /**
      * @param string                $uriTemplate the URI template string (RFC 6570)