added read_binary_file tool for file system MCP server

[robertyates]

added a read_binary_file tool to the file system MCP Server

Description

Server Details

• Server: filesystem
• Changes to: added read_binary_file tool

Motivation and Context

I was trying to use the existing server to fetch an excel file and it fails

How Has This Been Tested?

I have a custom agent that this works in and also include a unit test

Breaking Changes

pure additive, although read_file should likely now be removed vs. just being marked deprecated

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 Protocol Documentation
• My changes follows MCP security best practices
• I have updated the server's README accordingly
• I have tested this with an LLM client
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have documented all environment variables and configuration options

Additional context