First version of the MCP documentation.

This commit includes the following files: -rw-r--r-- 1 andre andre 1633 May 10 20:12 01-what-is-mcp.md -rw-r--r-- 1 andre andre 1559 May 10 20:12 02-tools-the-building-blocks.md -rw-r--r-- 1 andre andre 1983 May 10 20:12 03-the-conversation-loop.md -rw-r--r-- 1 andre andre 1977 May 10 20:12 04-from-local-to-remote.md -rw-r--r-- 1 andre andre 2409 May 10 20:12 05-try-it-yourself.md -rw-r--r-- 1 andre andre 1586 May 10 20:12 06-costs-mcp.md