Merge branch 'statuseable-hasstatus' into 'master'

rename Statuseable to HasStatus

## What does this MR do?

- Rename all instances of Statuseable in the codebase, to HasStatus
- Rename all files from statuseable to has_status

## What are the relevant issue numbers?

Closes #21103 

See merge request !6003

app/models/ci/pipeline.rb

 module Ci
   class Pipeline < ActiveRecord::Base
     extend Ci::Model
-    include Statuseable
+    include HasStatus
 
     self.table_name = 'ci_commits'
 

app/models/commit_status.rb

 class CommitStatus < ActiveRecord::Base
-  include Statuseable
+  include HasStatus
   include Importable
 
   self.table_name = 'ci_builds'

app/models/concerns/statuseable.rb → app/models/concerns/has_status.rb

-module Statuseable
+module HasStatus
   extend ActiveSupport::Concern
 
   AVAILABLE_STATUSES = %w[created pending running success failed canceled skipped]

app/services/ci/process_pipeline_service.rb

@@ -34,7 +34,7 @@ module Ci
     end
 
     def process_build(build, current_status)
-      return false unless Statuseable::COMPLETED_STATUSES.include?(current_status)
+      return false unless HasStatus::COMPLETED_STATUSES.include?(current_status)
 
       if valid_statuses_for_when(build.when).include?(current_status)
         build.enqueue

spec/models/concerns/statuseable_spec.rb → spec/models/concerns/has_status_spec.rb

 require 'spec_helper'
 
-describe Statuseable do
+describe HasStatus do
   before do
     @object = Object.new
-    @object.extend(Statuseable::ClassMethods)
+    @object.extend(HasStatus::ClassMethods)
   end
 
   describe '.status' do