Add git init command support to mcp-git-server and update README

[shashwat001]

Description

Added support for the git init command in the Git server. This allows LLM clients to initialize new Git repositories through the MCP protocol.

Server Details

• Server: git
• Changes to: server.py and README.md

Motivation and Context

This functionality was required to work on creating new git repositories when using filesystem mcp server. One can directly resume working with git when creating project from filesystem mcp server without needing to switch to terminal to initiate git repo.

How Has This Been Tested?

• Tested with Claude client to initialize new repositories
• Verified successful repository creation with directory structure

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