docs: add release & distribution one-pager for managed MCP server

[hossain-rayhan]

Adds a one-pager that proposes how to release the DocumentDB MCP Server to customers at scale covering self-host, managed per-cluster, and shared multi-tenant pool topologies, plus the full list of distribution channels (Anthropic MCP Registry, VS Code / Copilot Gallery, OpenAI MCP connectors, Cursor, Azure Marketplace, MCR, npm, etc.).

[lionelc]

@khelanmodi The distribution plan is a big jump to managed server, which means a completely overhaul on business model (if compared to CosmosDB). Could you please do some market research to justify ROI?

1. Any database company has an existing product with the standalone managed MCP server which charges separately instead of a bundle.
2. For companies that do have MCPaaS or the likes, what capabilities do they provide in their service? What is their potential moat?
3. If we are to go with the MCPaaS route, what would be our differentiator that can win the potential competition?

Since it's on business model, I believe the above questions will surely be asked when this plan is brought up. However, I don't see any mention on the competitive landscape or ROI analysis.