Add unauthorised200 parameter to /user endpoint

[paskal]

This resolves https://github.com/umputun/remark42/issues/1188 without making extra HTTP calls by adding a new parameter to the /api/v1/user endpoint.

Continuation of accidentally closed #1752.

[github-actions[bot]]

size-limit report 📦

Path	Size
public/embed.mjs	2.03 KB (0%)
public/remark.mjs	73.49 KB (+0.05% 🔺)
public/remark.css	8.26 KB (+0.02% 🔺)
public/last-comments.mjs	35.72 KB (+0.01% 🔺)
public/last-comments.css	3.75 KB (0%)
public/deleteme.mjs	12.11 KB (+0.34% 🔺)
public/counter.mjs	751 B (0%)

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 41.17647% with 10 lines in your changes are missing coverage. Please review.

Project coverage is 65.06%. Comparing base (877765c) to head (e189877). Report is 1 commits behind head on master.

Files	Patch %	Lines
frontend/apps/remark42/app/common/api.ts	14.28%	6 Missing :warning:
frontend/packages/api/clients/public.ts	60.00%	2 Missing and 2 partials :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1763 +/- ## ========================================== + Coverage 61.47% 65.06% +3.59% ========================================== Files 132 140 +8 Lines 2998 3521 +523 Branches 715 785 +70 ========================================== + Hits 1843 2291 +448 - Misses 1151 1158 +7 - Partials 4 72 +68 ```

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[coveralls]

Pull Request Test Coverage Report for Build 9060885089

Details

• 15 of 15 (100.0%) changed or added relevant lines in 2 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.03%) to 84.899%

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Files with Coverage Reduction	New Missed Lines	%
backend/app/notify/notify.go	2	92.73%
<!--	Total:	2		-->

Totals
Change from base Build 9026873922:	0.03%
Covered Lines:	5982
Relevant Lines:	7046

---

💛 - Coveralls