Add Ruby LSP plugin with inline lspServers configuration

plugins/ruby-lsp/README.md

@@ -0,0 +1,31 @@
+# ruby-lsp
+
+Ruby language server for Claude Code, providing code intelligence and analysis.
+
+## Supported Extensions
+`.rb`, `.rake`, `.gemspec`, `.ru`, `.erb`
+
+## Installation
+
+### Via gem (recommended)
+```bash
+gem install ruby-lsp
+```
+
+### Via Bundler
+Add to your Gemfile:
+```ruby
+gem 'ruby-lsp', group: :development
+```
+
+Then run:
+```bash
+bundle install
+```
+
+## Requirements
+- Ruby 3.0 or later
+
+## More Information
+- [Ruby LSP Website](https://shopify.github.io/ruby-lsp/)
+- [GitHub Repository](https://github.com/Shopify/ruby-lsp)