Deployment: Dockerfile and Smithery config

[calclavia]

This PR adds files for deploying your MCP server on Smithery. After deployment, users can use your server over streamable HTTP (hosted on Smithery) without needing to install any dependencies.

Changes

• Added Dockerfile to package your server for deployment.
• Added Smithery Configuration file to specify how to start your server. See documentation.
• Updated README to include installation command via Smithery and a popularity badge. Note that the command only works after the server is deployed on Smithery.

Server Details

• Smithery ID: @memgraph/mcp-memgraph
• Server Homepage: https://smithery.ai/server/@memgraph/mcp-memgraph

Action Items

• Build Passing: We verified that the Docker builds and your server starts up using an automated test.
• Code Review: Please review the changes to ensure the configuration is accurate for your server.
• Claim Server: Head to your server page to claim your server. This will let you edit your server listing on Smithery and deploy new versions of your server.

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[antejavor]

Hi @calclavia, can you take a look here: https://github.com/memgraph/ai-toolkit/tree/main/integrations/mcp-memgraph we moved the MCP integration there, we will archive and delete this repo.

Would you like to move this PR contribution there?