✨ login check

[github-actions[bot]]

closes #244

사용자가 로그인이 되었는지 확인하는 api입니다.

[github-actions[bot]]

Overall Project	91.99% -0.27%	:green_apple:
Files changed	76.19%	:green_apple:

File	Coverage
TokenCheckResponse.java	100%	:green_apple:
LoginController.java	100%	:green_apple:
LoginService.java	88.43% -2.31%	:green_apple:
NoSuchUserException.java	0%	:green_apple:

[github-actions[bot]]

Overall Project	91.96% -0.27%	:green_apple:
Files changed	60%	:green_apple:

File	Coverage
LoginController.java	100%	:green_apple:
LoginService.java	87.98% -2.4%	:green_apple:
NoSuchUserException.java	0%	:green_apple:

[github-actions[bot]]

Overall Project	91.96% -0.27%	:green_apple:
Files changed	60%	:green_apple:

File	Coverage
LoginController.java	100%	:green_apple:
LoginService.java	87.98% -2.4%	:green_apple:
NoSuchUserException.java	0%	:green_apple: