feat: add filesystem copy tool

[liam61]

Description

Hi, inspired by #2012, copy function is great, we may need this tool. So I made this PR, can plz help check when available~
cc @olaservo @domdomegg

Motivation and Context

How Has This Been Tested?

tested locally

Breaking Changes

no

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