feat: support user email verification mechanism

[guqing]

What type of PR is this?

/kind feature
/area core
/milestone 2.11.x

What this PR does / why we need it:

新增用户邮箱验证机制

Which issue(s) this PR fixes:

Fixes #4656

Special notes for your reviewer:

Does this PR introduce a user-facing change?

新增用户邮箱验证机制

[codecov]

Codecov Report

Attention: 94 lines in your changes are missing coverage. Please review.

Comparison is base (82a6ba6) 56.81% compared to head (4196911) 56.76%.

Files	Patch %	Lines
...ion/service/impl/EmailVerificationServiceImpl.java	36.75%	74 Missing ⚠️
...halo/app/core/extension/endpoint/UserEndpoint.java	79.41%	13 Missing and 1 partial ⚠️
...o/app/infra/exception/EmailVerificationFailed.java	33.33%	4 Missing ⚠️
...rc/main/java/run/halo/app/core/extension/User.java	0.00%	1 Missing ⚠️
.../main/java/run/halo/app/infra/ValidationUtils.java	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #4878      +/-   ##
============================================
- Coverage     56.81%   56.76%   -0.05%     
- Complexity     2972     2990      +18     
============================================
  Files           515      517       +2     
  Lines         16939    17131     +192     
  Branches       1274     1283       +9     
============================================
+ Hits           9624     9725     +101     
- Misses         6773     6862      +89     
- Partials        542      544       +2     

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[guqing]

/cc @ruibaby 需要在前端进行适配

[ruibaby]

/cc @ruibaby 需要在前端进行适配

Working on it

[ruibaby]

/retitle feat: support user email verification mechanism

Ready for review.

关于 Console 部分的 i18n 我将在后续的 PR 完善，因为分离个人中心之后需要重新整理一下 i18n 文件的结构。

[guqing]

/ping @halo-dev/sig-halo

[ruibaby]

/lgtm

[JohnNiang]

/lgtm

[f2c-ci-robot]

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