feat(sagemaker-unified-studio-spark-upgrade-mcp-server): Add Spark Upgrade Agent ReadMe for Remote MCP support

[naikvaib]

Upgrade Agent ReadMe for Remote MCP support

Fixes

Summary

Changes

Added comprehensive documentation for SageMaker Unified Studio MCP Server for Spark Upgrade, including configuration examples for MCP clients, usage examples for upgrade workflows, AWS authentication setup, architecture overview, and detailed FAQ section covering supported Spark versions and upgrade scenarios.

User experience

Before: Users had no documentation for the SageMaker Unified Studio Spark Upgrade MCP Server, making it difficult to configure and use the automated Spark upgrade capabilities.
After: Users have complete documentation with step-by-step configuration for various MCP clients (Kiro CLI, Cline, GitHub Copilot), clear usage examples, authentication setup instructions, and comprehensive FAQ to troubleshoot common scenarios.

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? (N)

RFC issue number: N/A

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

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.43%. Comparing base (e6c4675) to head (f8d0a01).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1884   +/-   ##
=======================================
  Coverage   90.42%   90.43%           
=======================================
  Files         852      852           
  Lines       63393    63393           
  Branches    10263    10263           
=======================================
+ Hits        57326    57327    +1     
  Misses       3774     3774           
+ Partials     2293     2292    -1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.