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>

.gitignore

@@ -57,6 +57,9 @@ node_modules/
 package-lock.json
 package.json
 
+### MkDocs ###
+site/
+
 ### Other ###
 .antlr/
 .profiler/