add visibility store

[duoertai]

Why make this pull request?

[Explain why you are making this pull request and what problem it solves.]

What has changed

[Summarize what components of the repo is updated]

[Link to xdb-apis/sdk-go PRs if it's on top of any API changes]

• API change link: ...
• Golang SDK change link: ...
• Server Component 1: ...
• Server Component 2: ...

How to test this pull request?

[If writing Integration test in Golang SDK repo, please provide link to the pull request of Golang SDK Repo]

[It's recommended to write integration test in Golang SDK repo, and enabled in this server repo first,
without enabling in the SDK repo. After this PR is merged, enable and merge the integration test in the SDK repo]

[Alternatively if Java/other SDK repo is preferred, then just test locally against server PR.
After the server PR is merged, merge the integration test in the SDK repo]

Checklist before merge

[ ] If applicable, merge the xdb-apis/sdk-go PRs to main branch
[ ] If applicable, merge the xdb-apis/xdb-apis PRs to main branch
[ ] Update go.mod to use the commitID of the main branches for xdb-apis/sdk-go

[codecov]

Codecov Report

Attention: 15 lines in your changes are missing coverage. Please review.

Comparison is base (19097d8) 63.66% compared to head (c0d9bdb) 63.81%.

❗ Current head c0d9bdb differs from pull request most recent head 678f4d9. Consider uploading reports for the commit 678f4d9 to get more accurate results

Files	Patch %	Lines
cmd/server/bootstrap/xcherry.go	42.85%	7 Missing and 1 partial ⚠️
config/config.go	25.00%	2 Missing and 1 partial ⚠️
engine/immediate_task_concurrent_processor.go	72.72%	3 Missing ⚠️
extensions/sql_db_schema_tool.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #116      +/-   ##
==========================================
+ Coverage   63.66%   63.81%   +0.15%     
==========================================
  Files          87       87              
  Lines        6597     6608      +11     
==========================================
+ Hits         4200     4217      +17     
+ Misses       2126     2120       -6     
  Partials      271      271              

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