Internal Release 0.2.0

- fix `lib/mcp-ruby` auto-import path
- implement server resources
- add basic listing of resources to Server
- allow setting handlers on Server
- wrap handler method results
- make tool definition more declarative
- make prompt definition more declarative
- bump dependency versions

lib/model_context_protocol.rb

@@ -7,6 +7,7 @@ require "model_context_protocol/tool"
 require "model_context_protocol/content"
 require "model_context_protocol/resource"
 require "model_context_protocol/prompt"
+require "model_context_protocol/version"
 
 module ModelContextProtocol
   class Annotations