Add CredentialsProvider for system service account (SSA) in C++ SDK

[Gazizonoki]

Changelog entry

Add CredentialsProvider for system service account (SSA) in C++ SDK

Changelog category

• New feature

Description for reviewers

Resolves ydb-platform/ydb-cpp-sdk#374

[github-actions]

🟢 2025-02-20 17:18:40 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-02-20 17:18:36 UTC Pre-commit check linux-x86_64-release-asan for 8f77613 has started.
⚪ 2025-02-20 17:30:18 UTC Artifacts will be uploaded here
⚪ 2025-02-20 17:33:14 UTC ya make is running...
⚫ 2025-02-20 17:37:09 UTC Check cancelled

[github-actions]

⚪ 2025-02-20 17:23:54 UTC Pre-commit check linux-x86_64-relwithdebinfo for 8f77613 has started.
⚪ 2025-02-20 17:25:04 UTC Artifacts will be uploaded here
⚪ 2025-02-20 17:27:59 UTC ya make is running...
🔴 2025-02-20 17:30:26 UTC Build failed, see the logs. Also see fail summary

[github-actions]

⚪ 2025-02-20 17:38:41 UTC Pre-commit check linux-x86_64-release-asan for 8e5b060 has started.
⚪ 2025-02-20 17:38:49 UTC Artifacts will be uploaded here
⚪ 2025-02-20 17:41:41 UTC ya make is running...
🟡 2025-02-20 18:43:33 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?
13064	12981	0	36	10	37

⚪ 2025-02-20 18:44:55 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-02-20 18:58:59 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
131 (only retried tests)	93	0	0	6	32

🟢 2025-02-20 18:59:08 UTC Build successful.
🟡 2025-02-20 18:59:35 UTC ydbd size 3.6 GiB changed* by +310.5 KiB, which is >= 100.0 KiB vs main: Warning

ydbd size dash	main: 90a6e27	merge: 8e5b060	diff	diff %
ydbd size	3 895 668 280 Bytes	3 895 986 184 Bytes	+310.5 KiB	+0.008%
ydbd stripped size	1 364 068 448 Bytes	1 364 181 760 Bytes	+110.7 KiB	+0.008%

^{*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]

⚪ 2025-02-20 17:47:23 UTC Pre-commit check linux-x86_64-relwithdebinfo for 8e5b060 has started.
⚪ 2025-02-20 17:48:34 UTC Artifacts will be uploaded here
⚪ 2025-02-20 17:51:26 UTC ya make is running...
🟡 2025-02-20 18:45:14 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?
27270	24655	0	2	2480	133

⚪ 2025-02-20 18:48:11 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-02-20 19:04:51 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
223 (only retried tests)	95	0	0	1	127

🟢 2025-02-20 19:05:01 UTC Build successful.
🟡 2025-02-20 19:05:20 UTC ydbd size 2.1 GiB changed* by +126.7 KiB, which is >= 100.0 KiB vs main: Warning

ydbd size dash	main: bd6334d	merge: 8e5b060	diff	diff %
ydbd size	2 239 517 968 Bytes	2 239 647 704 Bytes	+126.7 KiB	+0.006%
ydbd stripped size	474 552 088 Bytes	474 566 424 Bytes	+14.0 KiB	+0.003%

^{*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]

⚪ 2025-02-20 20:17:21 UTC Pre-commit check linux-x86_64-relwithdebinfo for d8aa239 has started.
⚪ 2025-02-20 20:17:34 UTC Artifacts will be uploaded here
⚪ 2025-02-20 20:20:24 UTC ya make is running...
🟡 2025-02-20 21:42:32 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?
27270	24674	0	2	2462	132

⚪ 2025-02-20 21:45:00 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-02-20 22:09:28 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
204 (only retried tests)	77	0	0	1	126

🟢 2025-02-20 22:09:35 UTC Build successful.
🟡 2025-02-20 22:09:53 UTC ydbd size 2.1 GiB changed* by +118.8 KiB, which is >= 100.0 KiB vs main: Warning

ydbd size dash	main: 555fbb8	merge: d8aa239	diff	diff %
ydbd size	2 240 049 416 Bytes	2 240 171 088 Bytes	+118.8 KiB	+0.005%
ydbd stripped size	474 639 512 Bytes	474 645 720 Bytes	+6.1 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]

⚪ 2025-02-20 20:17:49 UTC Pre-commit check linux-x86_64-release-asan for d8aa239 has started.
⚪ 2025-02-20 20:20:58 UTC Artifacts will be uploaded here
⚪ 2025-02-20 20:23:55 UTC ya make is running...
🟡 2025-02-20 22:03:59 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?
13064	12972	0	37	17	38

⚪ 2025-02-20 22:05:08 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-02-20 22:23:14 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
136 (only retried tests)	100	0	0	3	33

🟢 2025-02-20 22:23:20 UTC Build successful.
🟡 2025-02-20 22:23:47 UTC ydbd size 3.6 GiB changed* by +301.6 KiB, which is >= 100.0 KiB vs main: Warning

ydbd size dash	main: 555fbb8	merge: d8aa239	diff	diff %
ydbd size	3 896 864 936 Bytes	3 897 173 784 Bytes	+301.6 KiB	+0.008%
ydbd stripped size	1 364 380 864 Bytes	1 364 495 648 Bytes	+112.1 KiB	+0.008%

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