feat: Add bulk imports API for contacts (#1724)

app/models/data_import.rb

@@ -0,0 +1,37 @@
+# == Schema Information
+#
+# Table name: data_imports
+#
+#  id                :bigint           not null, primary key
+#  data_type         :string           not null
+#  processed_records :integer
+#  processing_errors :text
+#  status            :integer          default("pending"), not null
+#  total_records     :integer
+#  created_at        :datetime         not null
+#  updated_at        :datetime         not null
+#  account_id        :bigint           not null
+#
+# Indexes
+#
+#  index_data_imports_on_account_id  (account_id)
+#
+# Foreign Keys
+#
+#  fk_rails_...  (account_id => accounts.id)
+#
+class DataImport < ApplicationRecord
+  belongs_to :account
+  validates :data_type, inclusion: { in: ['contacts'], message: '%<value>s is an invalid data type' }
+  enum status: { pending: 0, processing: 1, completed: 2, failed: 3 }
+
+  has_one_attached :import_file
+
+  after_create_commit :process_data_import
+
+  private
+
+  def process_data_import
+    DataImportJob.perform_later(self)
+  end
+end