Add embedded MkDocs documentation site (#795)

Copy and convert existing MCP documentation into an embedded docs site
using MkDocs with Material theme. Includes client and server guides,
quickstart, development/contributing docs, architecture diagrams, and a
GitHub Actions workflow for publishing to GitHub Pages.

---------

Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>

docs/images/logo-light.svg

@@ -0,0 +1,69 @@
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