[refactor] 칵테일 한글이름 검색 기능추가, 검색결과 이후 전체 리스트 나오는 원인 검토.#248 (#249)

* fix : bugs of testCase, init data

* fix : bug

* refactor : add cocktailPreview field in cocktailSearchResponseDto

* refactor : add getCocktails conditions

* refactor : add function of searching korean name

Author: lkw9241

src/main/java/com/back/domain/cocktail/repository/CocktailRepository.java

@@ -67,6 +67,7 @@ List<Cocktail> findByCommentsCountLessThanOrderByCommentsCountDesc(
     @Query("SELECT c FROM Cocktail c " +
             "WHERE (:keyword IS NULL OR :keyword = '' OR " +
             "       LOWER(c.cocktailName) LIKE LOWER(CONCAT('%', :keyword, '%')) OR " +
+            "       LOWER(c.cocktailNameKo) LIKE LOWER(CONCAT('%', :keyword, '%')) OR " +
             "       LOWER(c.ingredient) LIKE LOWER(CONCAT('%', :keyword, '%')))" +
             "  AND (:strengths IS NULL OR c.alcoholStrength IN :strengths) " + // 알코올 도수 필터를 담당
             "  AND (:types IS NULL OR c.cocktailType IN :types) " +            // 칵테일 타입 필터를 담당