Restructure docs for analysts (#21188)

[anton-bobkov]

Changelog category

• Documentation

Description for reviewers

Backport to stable-25-2 from main, #21188

[github-actions]

🟢 2025-09-12 14:52:49 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-09-12 15:10:46 UTC Pre-commit check linux-x86_64-release-asan for af562d9 has started.
⚪ 2025-09-12 15:11:02 UTC Artifacts will be uploaded here
⚪ 2025-09-12 15:13:22 UTC ya make is running...
🟢 2025-09-12 15:13:27 UTC Tests successful.

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
0	0	0	0	0	0

🟢 2025-09-12 15:13:34 UTC Build successful.

[github-actions]

⚪ 2025-09-12 15:10:46 UTC Pre-commit check linux-x86_64-relwithdebinfo for af562d9 has started.
⚪ 2025-09-12 15:11:00 UTC Artifacts will be uploaded here
⚪ 2025-09-12 15:13:21 UTC ya make is running...
🟢 2025-09-12 15:13:27 UTC Tests successful.

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
0	0	0	0	0	0

🟢 2025-09-12 15:13:33 UTC Build successful.

[github-actions]

✅ Documentation build

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