Handles MCP protocol resource-related methods.

This module processes:

• resources/list - Lists available resources with optional pagination
• resources/read - Reads content from one or more resources

Pagination Support

The resources/list method supports pagination through cursor parameters:

# Request
%{"method" => "resources/list", "params" => %{"cursor" => "optional-cursor"}}

# Response with more results
%{
  "resources" => [...],
  "nextCursor" => "next-page-cursor"
}

# Response for last page
%{"resources" => [...]}

Resource Reading

The resources/read method supports reading multiple resources at once:

# Single resource
%{"method" => "resources/read", "params" => %{"uri" => "file:///example.txt"}}

# Multiple resources  
%{"method" => "resources/read", "params" => %{"uris" => ["file:///a.txt", "file:///b.txt"]}}

# Response (always wrapped in contents array)
%{
  "contents" => [
    %{
      "uri" => "file:///example.txt",
      "mimeType" => "text/plain", 
      "text" => "content"
    }
  ]
}