feat(user): support custom metadata

[GZTimeWalker]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 52.91262% with 194 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.18%. Comparing base (04f8601) to head (d90fec5).

Files with missing lines	Patch %	Lines
src/GZCTF/Extensions/UserMetadataExtension.cs	31.40%	66 Missing and 17 partials ⚠️
src/GZCTF/Controllers/MetadataController.cs	0.00%	19 Missing ⚠️
src/GZCTF/Models/Data/UserMetadataField.cs	51.72%	13 Missing and 1 partial ⚠️
.../GZCTF/Repositories/UserMetadataFieldRepository.cs	54.83%	13 Missing and 1 partial ⚠️
src/GZCTF/Middlewares/PrivilegeAuthentication.cs	38.88%	8 Missing and 3 partials ⚠️
src/GZCTF/Utils/Shared.cs	31.25%	10 Missing and 1 partial ⚠️
src/GZCTF/Models/AppDbContext.cs	86.66%	10 Missing ⚠️
src/GZCTF/Controllers/AdminController.cs	22.22%	7 Missing ⚠️
src/GZCTF/Utils/RegexHelper.cs	65.00%	6 Missing and 1 partial ⚠️
src/GZCTF/Controllers/InfoController.cs	33.33%	4 Missing ⚠️
... and 10 more

Additional details and impacted files

@@            Coverage Diff             @@
##             work     #535      +/-   ##
==========================================
- Coverage   59.31%   59.18%   -0.13%     
==========================================
  Files         190      195       +5     
  Lines        9811    10116     +305     
  Branches     1204     1267      +63     
==========================================
+ Hits         5819     5987     +168     
- Misses       3495     3605     +110     
- Partials      497      524      +27     

Files with missing lines	Coverage Δ
src/GZCTF/Extensions/Startup/ServicesExtension.cs	89.21% <100.00%> (+0.21%)	⬆️
src/GZCTF/Models/Data/Division.cs	78.12% <ø> (ø)
src/GZCTF/Models/Data/Submission.cs	82.35% <100.00%> (ø)
...GZCTF/Models/Request/Account/ProfileUpdateModel.cs	100.00% <100.00%> (+100.00%)	⬆️
...CTF/Models/Request/Account/ProfileUserInfoModel.cs	100.00% <100.00%> (ø)
src/GZCTF/Models/Request/Edit/DivisionEditModel.cs	100.00% <ø> (ø)
src/GZCTF/Models/Request/Game/ScoreboardModel.cs	100.00% <100.00%> (ø)
src/GZCTF/Models/Request/Info/TeamUserInfoModel.cs	100.00% <ø> (ø)
src/GZCTF/Models/Transfer/TransferChallenge.cs	96.36% <ø> (ø)
src/GZCTF/Models/Transfer/TransferDivision.cs	100.00% <ø> (ø)
... and 28 more

... and 3 files with indirect coverage changes

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