refac: DTO 구조 변경

- Converter - Constructor 관련 경고 수정
- JsonString 관련 의존성 제거, jsonFlag 지정
- DateTimeConveter에서 time format 지정

src/sammo/DTO/Attr/Convert.php

@@ -8,23 +8,37 @@ use sammo\DTO\Converter\Converter;
 class Convert
 {
   public Converter $converter;
+  public array $targetTypes;
+  public readonly array $args;
   public function __construct(
-    public readonly array $targetTypes,
     public readonly string $converterType,
     ...$args
   ) {
     if(!is_subclass_of($converterType, \sammo\DTO\Converter\Converter::class)){
-      throw new \Exception("$converterType is not a subclass of \sammo\DTO\Converter\Converter");
+      throw new \Exception("$converterType is not a subclass of DTO\Converter\Converter");
     }
-    $this->converter = new $converterType($targetTypes, ...$args);
+    $this->args = $args;
+  }
+
+  public function setType(array $targetTypes): self{
+    $this->targetTypes = $targetTypes;
+    $converterType = $this->converterType;
+    $this->converter = new $converterType($targetTypes, ...$this->args);
+    return $this;
   }
 
   public function convertFrom(string|array|int|float|bool|null $raw): mixed
   {
+    if($this->converter === null){
+      throw new \Exception('converter is not set');
+    }
     return $this->converter->convertFrom($raw);
   }
 
   public function convertTo(mixed $target): string|array|int|float|bool|null {
+    if($this->converter === null){
+      throw new \Exception('converter is not set');
+    }
     return $this->converter->convertTo($target);
   }
 }