Simplify deployment of Replication MCP server over HTTPS

## Problem

The Airbyte Replication MCP server is documented mainly for local stdio clients (Claude Desktop, Cursor, etc.). Many remote MCP platforms require a public HTTPS endpoint using Streamable HTTP — stdio-based servers cannot be used directly.

The repo already includes hosted HTTP support (airbyte-mcp-http, Dockerfile.mcp, Streamable HTTP on port 8080), but this path is not well documented. Users who want to connect from a remote MCP client have no clear guide from “local stdio MCP” to “deployed HTTPS MCP.”

There is also no official Airbyte-hosted public MCP endpoint in this repository. Self-hosting with TLS termination at a reverse proxy is the expected model.

## Goal

Make it straightforward to deploy the Replication MCP server over HTTPS and connect it to remote MCP clients (e.g. Dust, MCP Inspector over HTTP, custom integrations).