refactor: Google API 관련 미사용 컨트롤러 삭제, 패키지 통합

Author: ysw789

src/main/java/dmu/dasom/api/domain/google/controller/GoogleController.java

@@ -1,4 +1,4 @@
-package dmu.dasom.api.domain.email.enums;
+package dmu.dasom.api.domain.google.enums;
 
 public enum MailType {
     DOCUMENT_RESULT, // 서류 합격

src/main/java/dmu/dasom/api/domain/email/enums/MailType.java renamed to src/main/java/dmu/dasom/api/domain/google/enums/MailType.java

@@ -1,8 +1,8 @@
-package dmu.dasom.api.domain.email.service;
+package dmu.dasom.api.domain.google.service;
 
 import dmu.dasom.api.domain.common.exception.CustomException;
 import dmu.dasom.api.domain.common.exception.ErrorCode;
-import dmu.dasom.api.domain.email.enums.MailType;
+import dmu.dasom.api.domain.google.enums.MailType;
 import jakarta.mail.MessagingException;
 import jakarta.mail.internet.MimeMessage;
 import lombok.RequiredArgsConstructor;

src/main/java/dmu/dasom/api/domain/email/service/EmailService.java renamed to src/main/java/dmu/dasom/api/domain/google/service/EmailService.java

@@ -64,21 +64,6 @@ private Sheets getSheetsService() throws IOException, GeneralSecurityException {
         return sheetsService;
     }
 
-    public void writeToSheet(String spreadsheetId, String range, List<List<Object>> values) {
-        try {
-            Sheets service = getSheetsService();
-            ValueRange body = new ValueRange().setValues(values);
-            service.spreadsheets()
-                .values()
-                .update(spreadsheetId, range, body)
-                .setValueInputOption("USER_ENTERED")
-                .execute();
-        } catch (IOException | GeneralSecurityException e) {
-            log.error("시트에 데이터를 쓰는 데 실패했습니다.");
-            throw new CustomException(ErrorCode.WRITE_FAIL);
-        }
-    }
-
     public void appendToSheet(List<Applicant> applicants) {
         processSheetsUpdate(applicants, true);
     }