Create prefix impl table and ability to create prefixed vector index

[MBkkt]

Changelog category

• Not for changelog (changelog entry is not required)

Additional information

It adds additional layer for vector index: prefix impl table (prefix columns and id column)

[MBkkt]

I'm not really sure is it needed or not, but I found place where we check that index children table one of these, otherwise will be crash.
So it's my paranoia

[github-actions]

⚪ 2025-02-13 20:15:36 UTC Pre-commit check linux-x86_64-release-asan for 63c48fa has started.
⚪ 2025-02-13 20:16:09 UTC Artifacts will be uploaded here
⚪ 2025-02-13 20:19:36 UTC ya make is running...
🟡 2025-02-13 21:43:36 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?
13636	13554	0	29	17	36

⚪ 2025-02-13 21:44:45 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-02-13 21:56:57 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
127 (only retried tests)	91	0	0	3	33

🟢 2025-02-13 21:57:04 UTC Build successful.
🟢 2025-02-13 21:57:28 UTC ydbd size 3.6 GiB changed* by +86.5 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 28180f6	merge: 63c48fa	diff	diff %
ydbd size	3 882 848 808 Bytes	3 882 937 384 Bytes	+86.5 KiB	+0.002%
ydbd stripped size	1 359 665 552 Bytes	1 359 686 832 Bytes	+20.8 KiB	+0.002%

^{*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]

⚪ 2025-02-13 20:16:32 UTC Pre-commit check linux-x86_64-relwithdebinfo for 63c48fa has started.
⚪ 2025-02-13 20:16:35 UTC Artifacts will be uploaded here
⚪ 2025-02-13 20:19:29 UTC ya make is running...
🟢 2025-02-13 21:27:07 UTC Tests successful.

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
27811	25211	0	0	2469	131

🟢 2025-02-13 21:29:24 UTC Build successful.
🟢 2025-02-13 21:29:39 UTC ydbd size 2.1 GiB changed* by +64.0 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 28180f6	merge: 63c48fa	diff	diff %
ydbd size	2 232 662 400 Bytes	2 232 727 888 Bytes	+64.0 KiB	+0.003%
ydbd stripped size	473 850 552 Bytes	473 860 856 Bytes	+10.1 KiB	+0.002%

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

[CyberROFL]

schemeshard - ok