Activate and fix rubocop-rake plugin cops (toptal#1015)

Author: mjankowski

.rubocop.yml

@@ -1,5 +1,8 @@
 inherit_from: .rubocop_todo.yml
 
+plugins:
+  - rubocop-rake
+
 AllCops:
   NewCops: enable
   TargetRubyVersion: 3.2

Rakefile

@@ -7,10 +7,12 @@ RSpec::Core::RakeTask.new(:spec)
 task default: :spec
 
 namespace :es do
+  desc 'Start the elasticsearch test server'
   task :start do
     Rake.application['elasticsearch:start'].invoke
   end
 
+  desc 'Stop the elasticsearch test server'
   task :stop do
     Rake.application['elasticsearch:stop'].invoke
   end

gemfiles/base.gemfile

@@ -6,6 +6,7 @@ gem 'redis', require: false
 gem 'rspec', '>= 3.7.0'
 gem 'rspec-collection_matchers'
 gem 'rubocop', '1.84.2'
+gem 'rubocop-rake'
 gem 'sqlite3', '~> 2.1'
 gem 'timecop'
 gem 'unparser', '~> 0.6.15'