chore: Member Entity 컬럼 변경 및 추가

[ParkJiwoon]

Description

32 에서 의논한 대로 수정

1. 프로필 이미지는 profileImageUrl 컬럼으로 추가
2. nickname 은 @Nullable, displayId 는 @NotNull 로 Unique
3. Email 컬럼도 Unique 설정

Changes

• name -> dispalyId 로 변경하고 Unique 설정
• nickName -> nickname 변경
• email 컬럼 Unique 설정
• profileImageUrl 컬럼 추가

[codecov[bot]]

Codecov Report

Merging #40 (c334598) into develop (523b486) will increase coverage by 0.14%. The diff coverage is 86.84%.

@@              Coverage Diff              @@
##             develop      #40      +/-   ##
=============================================
+ Coverage      79.75%   79.89%   +0.14%     
- Complexity       187      192       +5     
=============================================
  Files             42       41       -1     
  Lines            578      587       +9     
  Branches          10       10              
=============================================
+ Hits             461      469       +8     
- Misses           110      111       +1     
  Partials           7        7              

Impacted Files	Coverage Δ	Complexity Δ
...nstagramclone/controller/dto/SigninRequestDto.java	50.00% <ø> (ø)	3.00 <0.00> (ø)
...instagramclone/controller/dto/TokenRequestDto.java	80.00% <ø> (ø)	4.00 <0.00> (ø)
...nstagramclone/controller/dto/SignupRequestDto.java	69.23% <50.00%> (ø)	4.00 <0.00> (ø)
...ivongella/instagramclone/domain/member/Member.java	86.84% <80.00%> (-6.02%)	19.00 <5.00> (+3.00)	:arrow_down:
...stagramclone/controller/dto/MemberResponseDto.java	93.33% <100.00%> (+1.02%)	8.00 <3.00> (+1.00)
.../instagramclone/controller/dto/post/MemberDto.java	94.44% <100.00%> (+10.23%)	7.00 <4.00> (+2.00)
...ongella/instagramclone/service/CommentService.java	94.33% <100.00%> (ø)	16.00 <1.00> (ø)

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