Add Rails LSP plugin

Gemfile

@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
-ruby "3.3.0"
+ruby File.read(".ruby-version").strip
 
 # Use main development branch of Rails
 gem "rails", github: "rails/rails", branch: "main"
@@ -66,6 +66,7 @@ group :development do
   # Use console on exceptions pages [https://github.com/rails/web-console]
   gem "web-console"
   gem "hotwire-livereload"
+  gem "ruby-lsp-rails"
 end
 
 group :test do

Gemfile.lock

@@ -201,6 +201,7 @@ GEM
       ast (~> 2.4.1)
       racc
     pg (1.5.4)
+    prism (0.19.0)
     propshaft (0.8.0)
       actionpack (>= 7.0.0)
       activesupport (>= 7.0.0)
@@ -271,6 +272,16 @@ GEM
       rubocop-minitest
       rubocop-performance
       rubocop-rails
+    ruby-lsp (0.13.4)
+      language_server-protocol (~> 3.17.0)
+      prism (>= 0.19.0, < 0.20)
+      sorbet-runtime (>= 0.5.10782)
+    ruby-lsp-rails (0.2.9)
+      actionpack (>= 6.0)
+      activerecord (>= 6.0)
+      railties (>= 6.0)
+      ruby-lsp (>= 0.13.0, < 0.14.0)
+      sorbet-runtime (>= 0.5.9897)
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
@@ -279,6 +290,7 @@ GEM
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
+    sorbet-runtime (0.5.11226)
     stimulus-rails (1.3.3)
       railties (>= 6.0.0)
     stringio (3.1.0)
@@ -344,6 +356,7 @@ DEPENDENCIES
   rails!
   redis (>= 4.0.1)
   rubocop-rails-omakase
+  ruby-lsp-rails
   selenium-webdriver
   stimulus-rails
   tailwindcss-rails