feat: sla 1 - refactor sla_policies model and add applied_sla model (#8602)

* feat: add models

* chore: refactor sla column names

* chore: remove foreign keys

* chore: fix spec

* chore: refactor models

enterprise/app/models/applied_sla.rb

@@ -0,0 +1,23 @@
+# == Schema Information
+#
+# Table name: applied_slas
+#
+#  id              :bigint           not null, primary key
+#  sla_status      :string
+#  created_at      :datetime         not null
+#  updated_at      :datetime         not null
+#  account_id      :bigint           not null
+#  conversation_id :bigint           not null
+#  sla_policy_id   :bigint           not null
+#
+# Indexes
+#
+#  index_applied_slas_on_account_id       (account_id)
+#  index_applied_slas_on_conversation_id  (conversation_id)
+#  index_applied_slas_on_sla_policy_id    (sla_policy_id)
+#
+class AppliedSla < ApplicationRecord
+  belongs_to :account
+  belongs_to :sla_policy
+  belongs_to :conversation
+end

enterprise/app/models/sla_policy.rb

@@ -2,14 +2,16 @@
 #
 # Table name: sla_policies
 #
-#  id                         :bigint           not null, primary key
-#  frt_threshold              :float
-#  name                       :string           not null
-#  only_during_business_hours :boolean          default(FALSE)
-#  rt_threshold               :float
-#  created_at                 :datetime         not null
-#  updated_at                 :datetime         not null
-#  account_id                 :bigint           not null
+#  id                            :bigint           not null, primary key
+#  description                   :string
+#  first_response_time_threshold :float
+#  name                          :string           not null
+#  next_response_time_threshold  :float
+#  only_during_business_hours    :boolean          default(FALSE)
+#  resolution_time_threshold     :float
+#  created_at                    :datetime         not null
+#  updated_at                    :datetime         not null
+#  account_id                    :bigint           not null
 #
 # Indexes
 #