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

.rubocop.yml

@@ -1,2 +1,5 @@
 inherit_gem:
   rubocop-shopify: rubocop.yml
+Naming/FileName:
+  Exclude:
+    - 'lib/mcp-ruby.rb'