✨ feat: add new announcement check api

[seonghun-dev]

• 신규 공지사항 여부 API

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 32.70%. Comparing base (c9f3736) to head (fe5d8bc).

Additional details and impacted files

@@             Coverage Diff              @@
##                dev     #488      +/-   ##
============================================
+ Coverage     32.43%   32.70%   +0.26%     
- Complexity      136      138       +2     
============================================
  Files            78       78              
  Lines          1002     1006       +4     
  Branches         31       31              
============================================
+ Hits            325      329       +4     
  Misses          672      672              
  Partials          5        5              

Files	Coverage Δ
...nnouncement/controller/AnnouncementController.java	100.00% <100.00%> (ø)
...ains/announcement/service/AnnouncementService.java	100.00% <100.00%> (ø)

[siyeonSon]

테스트 코드 써달라!

[seonghun-dev]

@siyeonSon 작성했습니다

[siyeonSon]

LGTM 👍