feat: add S3 Tables MCP Server

[okhomin]

Summary

An MCP server providing programmatic read/write access to AWS S3 Tables information through standardized endpoints, enabling AI assistants to retrieve current S3 Tables data.

Changes

Added S3 Tables MCP Server implementation.

Please provide a summary of what's being changed

User experience

Please share what the user experience looks like before and after this change

Users can perform read S3 Tables operations by default.
Users need to specify --allow-write to allow write operations.

Checklist

If your change doesn't seem to apply, please leave them unchecked.

• I have reviewed the contributing guidelines
• I have performed a self-review of this change
• Changes have been tested
• Changes are documented

Is this a breaking change? No

RFC issue number: #583

Checklist:

• Migration process documented
• Implement warnings (if it can live side by side)

Acknowledgment

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of the project license.

[codecov]

Codecov Report

Attention: Patch coverage is 85.79117% with 132 lines in your changes missing coverage. Please review.

Project coverage is 88.29%. Comparing base (6012199) to head (8e85bc4).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...ver/awslabs/s3_tables_mcp_server/file_processor.py	77.83%	24 Missing and 19 partials ⚠️
...-mcp-server/awslabs/s3_tables_mcp_server/server.py	76.74%	35 Missing and 5 partials ⚠️
.../awslabs/s3_tables_mcp_server/engines/pyiceberg.py	72.18%	22 Missing and 15 partials ⚠️
...cp-server/awslabs/s3_tables_mcp_server/database.py	75.86%	7 Missing ⚠️
...-mcp-server/awslabs/s3_tables_mcp_server/models.py	96.85%	4 Missing ⚠️
...-mcp-server/awslabs/s3_tables_mcp_server/tables.py	98.63%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #584      +/-   ##
==========================================
- Coverage   88.45%   88.29%   -0.16%     
==========================================
  Files         551      564      +13     
  Lines       37435    38364     +929     
  Branches     5820     5932     +112     
==========================================
+ Hits        33113    33874     +761     
- Misses       2756     2867     +111     
- Partials     1566     1623      +57     

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[gsoundar]

This commit looks good to me.

[scottschreckengaust]

Please add entries at .github/CODEOWNERS, mkdocs.yml, and docs/index.md, plus add a documentation file at docs/servers/s3-tables-mcp-server.md.

[scottschreckengaust]

Review comments.

[scottschreckengaust]

Run pre-commit run --all-files at the top-level of the repository to review failures.

[scottschreckengaust]

LGTM

[scottschreckengaust]

LGTM