Define and Implement delete

src/Concept/Model.php

@@ -15,4 +15,5 @@ interface Model
     public function isDirty(): bool;
     public function save(): void;
     public function edit(array $data): void;
+    public function delete(): void;
 }

src/Concept/Model/Repository.php

@@ -23,6 +23,7 @@ interface Repository
     public function save(Model $model): void;
     public function edit(Model $model, array $data): Model;
     public function create(array $data): Model;
+    public function delete(Model $model): void;
     public function fetchById(int $id): Model;
     public function fetchAll(): array;
 }