non-JSON stdio version log at server startup cause some MCP clients to fail

[jposert]

The MCP server was logging version information to stdout during startup:

console.log("Azure DevOps MCP Server version : " + packageVersion);

This causes issues when the server was used with MCP clients (like Claude Desktop) because:

• MCP protocol requires stdout to be reserved exclusively for JSON-RPC messages;
• Any non-JSON output on stdout breaks the protocol communication;
• Clients receive parsing errors like: Unexpected token 'A', "Azure DevO"... is not valid JSON which caused MCP client to fail;
  

https://modelcontextprotocol.io/specification/2025-03-26/basic/transports#stdio

"The server MUST NOT write anything to its stdout that is not a valid MCP message."

The solution for the problem is to just simply remove the version logging at startup as suggested here:
#146

Version info is still accessible via MCP server properties (server.name and server.version).