add an example for homebrew style file upload

[SamYuan1990]

Motivation and Context

an example for modelcontextprotocol/modelcontextprotocol#1306 from modelcontextprotocol/modelcontextprotocol#1522
address #1590

How Has This Been Tested?

see document as readme of this PR.

Breaking Changes

n/A

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context

[maxisbey]

please don't commit PDFs to this repo, they're large binary files and often considered not secure to open unless trusted

[SamYuan1990]

ok, I will remove the pdf file this week. it's mid night my local time today.

[SamYuan1990]

hi @maxisbey , as you have my word, I just updated this example as remove pdf files and pass CI checks. Would you like to give it a review?

[maxisbey]

I won't be reviewing this as it's not something we can merge. As mentioned in the linked issue, this would require a SEP to be accepted and merged into a draft spec of MCP. Unfortunately I don't have time to do code reviews for things that aren't able to be merged :(

The SEP I'm guessing this is following, modelcontextprotocol/modelcontextprotocol#1306, hasn't yet been accepted and would need to be before any maintainers would look at adding this to the Python SDK.

Going to switch this PR to a draft for now.