feat: add generic/template support for queries/commands

Author: janvt

src/Contracts/Application/Command.php

@@ -4,6 +4,9 @@
 
 namespace GeekCell\Ddd\Contracts\Application;
 
+/**
+ * @template T of mixed
+ */
 interface Command
 {
 }

src/Contracts/Application/CommandBus.php

@@ -9,8 +9,9 @@ interface CommandBus
     /**
      * Dispatch a command to the appropriate handler.
      *
-     * @param Command $command
-     * @return mixed
+     * @template T of mixed
+     * @param Command<T> $command
+     * @return T
      */
     public function dispatch(Command $command): mixed;
 }

src/Contracts/Application/Query.php

@@ -4,6 +4,9 @@
 
 namespace GeekCell\Ddd\Contracts\Application;
 
+/**
+ * @template T of mixed
+ */
 interface Query
 {
 }

src/Contracts/Application/QueryBus.php

@@ -9,8 +9,9 @@ interface QueryBus
     /**
      * Dispatch a query to the appropriate handler.
      *
-     * @param Query $query
-     * @return mixed
+     * @template T of mixed
+     * @param Query<T> $query
+     * @return T
      */
     public function dispatch(Query $query): mixed;
 }