[Http] Reply with structured issues when client accepts json data

[UgnineSirdis]

Changelog entry

When client says that it expects data in json format, send issues in json format instead of html.
It improves issues display in YDB UI

Changelog category

• Improvement

Additional information

...

[github-actions]

⚪ 2024-08-08 14:23:39 UTC Pre-commit check for 0d0feee has started.
⚪ 2024-08-08 14:26:35 UTC Check linux-x86_64-release-clang14 is running...
🟢 2024-08-08 14:56:22 UTC Build successful.

[github-actions]

⚪ 2024-08-08 14:25:21 UTC Pre-commit check for 0d0feee has started.
⚪ 2024-08-08 14:29:17 UTC Check linux-x86_64-release-asan is running...
⚫ 2024-08-08 15:30:51 UTC Check cancelled

[github-actions]

⚪ 2024-08-08 14:26:08 UTC Pre-commit check for 0d0feee has started.
⚪ 2024-08-08 14:29:09 UTC Check linux-x86_64-relwithdebinfo is running...
⚫ 2024-08-08 15:31:09 UTC Check cancelled

[github-actions]

⚪ 2024-08-08 15:33:25 UTC Pre-commit check for 0433aa0 has started.
⚪ 2024-08-08 15:37:19 UTC Check linux-x86_64-release-asan is running...
🔴 2024-08-08 17:56:19 UTC Some tests failed, follow the links below.

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
10989	10921	0	21	30	17

🟢 2024-08-08 17:57:34 UTC Build successful.
🟢 2024-08-08 17:58:05 UTC ydbd size 5.4 GiB changed* by +61.0 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 78d1439	merge: 0433aa0	diff	diff %
ydbd size	5 839 792 744 Bytes	5 839 855 192 Bytes	+61.0 KiB	+0.001%
ydbd stripped size	1 467 330 960 Bytes	1 467 341 104 Bytes	+9.9 KiB	+0.001%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2024-08-08 15:39:27 UTC Pre-commit check for 0433aa0 has started.
⚪ 2024-08-08 15:43:19 UTC Check linux-x86_64-release-clang14 is running...
🟢 2024-08-08 15:50:27 UTC Build successful.

[github-actions]

⚪ 2024-08-08 15:40:17 UTC Pre-commit check for 0433aa0 has started.
⚪ 2024-08-08 15:43:10 UTC Check linux-x86_64-relwithdebinfo is running...
🟡 2024-08-08 17:36:17 UTC Some tests failed, follow the links below. Going to retry failed tests...

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
39743	34416	0	7	5308	12

⚪ 2024-08-08 17:40:48 UTC Failed tests rerun (try 2) linux-x86_64-relwithdebinfo is running...
🟢 2024-08-08 17:49:36 UTC Tests successful.

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
20 (only retried tests)	9	0	0	1	10

🟢 2024-08-08 17:49:43 UTC Build successful.
🟢 2024-08-08 17:50:17 UTC ydbd size 8.1 GiB changed* by +68.2 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 78d1439	merge: 0433aa0	diff	diff %
ydbd size	8 682 534 824 Bytes	8 682 604 680 Bytes	+68.2 KiB	+0.001%
ydbd stripped size	472 557 672 Bytes	472 561 000 Bytes	+3.2 KiB	+0.001%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}