chore(sidekiq): add spec:isolated rake task

Author: solnic

sentry-sidekiq/Rakefile

@@ -1,10 +1,13 @@
 # frozen_string_literal: true
 
 require "bundler/gem_tasks"
-require "rspec/core/rake_task"
+require_relative "../lib/sentry/test/rake_tasks"
 
-RSpec::Core::RakeTask.new(:spec).tap do |task|
-  task.rspec_opts = "--order rand"
-end
+Sentry::Test::RakeTasks.define_spec_tasks(
+  spec_pattern: "spec/sentry/**/*_spec.rb",
+  spec_rspec_opts: "--order rand --format progress",
+  isolated_specs_pattern: "spec/isolated/**/*_spec.rb",
+  isolated_rspec_opts: "--format progress"
+)
 
-task default: :spec
+task default: [:spec, :"spec:isolated"]