Add RowsCount/Rows and use it for stats purposes

[Hor911]

#15105

[github-actions]

🟢 2025-03-12 12:23:20 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-03-12 12:24:14 UTC Pre-commit check linux-x86_64-release-asan for f080103 has started.
⚪ 2025-03-12 12:24:18 UTC Artifacts will be uploaded here
⚪ 2025-03-12 12:27:31 UTC ya make is running...
🟡 2025-03-12 14:09:32 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
14147	14065	0	42	6	34

⚪ 2025-03-12 14:11:00 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-03-12 14:24:02 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Test history | Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
131 (only retried tests)	94	0	3	1	33

⚪ 2025-03-12 14:24:13 UTC ya make is running... (failed tests rerun, try 3)
🟢 2025-03-12 14:38:43 UTC Tests successful.

Test history | Ya make output | Test bloat | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
66 (only retried tests)	35	0	0	0	31

🟢 2025-03-12 14:38:56 UTC Build successful.
🟢 2025-03-12 14:39:27 UTC ydbd size 3.8 GiB changed* by -2.5 KiB, which is <= 0 Bytes vs main: OK

ydbd size dash	main: ecf0ad1	merge: f080103	diff	diff %
ydbd size	4 044 620 984 Bytes	4 044 618 408 Bytes	-2.5 KiB	-0.000%
ydbd stripped size	1 399 433 544 Bytes	1 399 436 808 Bytes	+3.2 KiB	+0.000%

^{*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]

⚪ 2025-03-12 12:25:05 UTC Pre-commit check linux-x86_64-relwithdebinfo for f080103 has started.
⚪ 2025-03-12 12:25:19 UTC Artifacts will be uploaded here
⚪ 2025-03-12 12:28:41 UTC ya make is running...
🟡 2025-03-12 14:00:17 UTC Some tests failed, follow the links below. Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
28573	25970	0	2	2481	120

⚪ 2025-03-12 14:02:37 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-03-12 14:18:50 UTC Tests successful.

Test history | Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
181 (only retried tests)	74	0	0	0	107

🟢 2025-03-12 14:18:56 UTC Build successful.
🟢 2025-03-12 14:19:15 UTC ydbd size 2.1 GiB changed* by +8.4 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: eda007c	merge: f080103	diff	diff %
ydbd size	2 297 951 776 Bytes	2 297 960 336 Bytes	+8.4 KiB	+0.000%
ydbd stripped size	480 968 512 Bytes	480 971 392 Bytes	+2.8 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}