Add void return type to process methods in CompilerPasses

Explicitly define the return type as `void` for the `process` methods in `ToolsDefinitionCompilerPass` and `ResourcesDefinitionCompilerPass`. This enhances code clarity and aligns with modern PHP best practices.

Author: klapaudius

src/DependencyInjection/CompilerPass/ResourcesDefinitionCompilerPass.php

@@ -13,7 +13,7 @@
  */
 final class ResourcesDefinitionCompilerPass implements CompilerPassInterface
 {
-    public function process(ContainerBuilder $container)
+    public function process(ContainerBuilder $container): void
     {
         $resources = $container->getparameter('klp_mcp_server.resources');
         // Register each resource as a service in the container if not already defined

src/DependencyInjection/CompilerPass/ToolsDefinitionCompilerPass.php

@@ -13,7 +13,7 @@
  */
 final class ToolsDefinitionCompilerPass implements CompilerPassInterface
 {
-    public function process(ContainerBuilder $container)
+    public function process(ContainerBuilder $container): void
     {
         $tools = $container->getparameter('klp_mcp_server.tools');
         // Register each tool as a service in the container if not already defined