Added new library for PHP: graphql-attribute-schema [server][php]

Easily build your GraphQL schema for **webonyx/graphql-php** using PHP
attributes instead of large configuration arrays.

Author: jerowork

src/code/language-support/php/server/graphql-atrribute-schema.md

@@ -0,0 +1,110 @@
+---
+name: graphql-attribute-schema
+description: Easily build your GraphQL schema for webonyx/graphql-php using PHP attributes instead of large configuration arrays.
+url: https://jerowork.github.io/graphql-attribute-schema
+github: jerowork/graphql-attribute-schema
+---
+
+Easily build your GraphQL schema for `webonyx/graphql-php` using PHP attributes instead of large configuration arrays.
+
+A simple example:
+
+```php
+use Jerowork\GraphqlAttributeSchema\Attribute\Enum;
+use Jerowork\GraphqlAttributeSchema\Attribute\Field;
+use Jerowork\GraphqlAttributeSchema\Attribute\InputType;
+use Jerowork\GraphqlAttributeSchema\Attribute\Mutation;
+use Jerowork\GraphqlAttributeSchema\Attribute\Query;
+use Jerowork\GraphqlAttributeSchema\Attribute\Type;
+
+final readonly class CreateUserMutation
+{
+    #[Mutation]
+    public function createUser(CreateUserInputType $input): User
+    {
+        // Business logic to create a user
+    }
+}
+
+final readonly class UserQuery
+{
+    #[Query(description: 'Get a user')]
+    public function user(int $userid): User
+    {
+        // Fetch and return user data
+    }
+}
+
+#[InputType]
+final readonly class CreateUserInputType
+{
+    public function __construct(
+        #[Field] 
+        public int $userId,
+        #[Field] 
+        public string $name,
+        #[Field(name: 'phoneNumber')] 
+        public ?string $phone,
+    ) {}
+}
+
+#[Type]
+final readonly class User
+{
+    // Define fields as class properties
+    public function __construct(
+        #[Field] 
+        public int $userId,
+        #[Field] 
+        public string $name,   
+        public ?string $phone,
+        #[Field(description: 'The status of the user')] 
+        public UserStatusType $status,
+    ) {}
+
+    // Define fields with methods for additional logic
+    #[Field]
+    public function getPhoneNumber(): string
+    {
+        return sprintf('+31%s', $this->phone);
+    }
+}
+
+#[Enum(description: 'The status of the user')]
+enum UserStatusType: string 
+{
+    case Created = 'CREATED';
+    case Removed = 'REMOVED';
+}
+```
+
+This will result in the following GraphQL schema:
+```graphql
+type Mutation {
+    createUser(input: CreateUserInput!): User!
+}
+
+type Query {
+    user(userId: Int!): User!
+}
+
+input CreateUserInput {
+    userId: Int!
+    name: String!
+    phoneNumber: String
+}
+
+type User {
+    userId: Int!
+    name: String!
+    status: UserStatus!
+    phoneNumber: String
+}
+
+enum UserStatus {
+    CREATED
+    REMOVED
+}
+```
+
+Available attributes: `Mutation`, `Query`, `Type`, `InterfaceType`, `InputType`, `Enum`, `EnumValue`, `Field`, `Arg`, `Autowire`, `Scalar`, `Cursor`