Add antenna and bio-searchability support

app/models/antenna_account.rb

@@ -0,0 +1,17 @@
+# == Schema Information
+#
+# Table name: antenna_accounts
+#
+#  id         :bigint(8)        not null, primary key
+#  antenna_id :bigint(8)        not null
+#  account_id :bigint(8)        not null
+#  exclude    :boolean          default(FALSE), not null
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#
+class AntennaAccount < ApplicationRecord
+
+  belongs_to :antenna
+  belongs_to :account
+
+end