Add API endpoints to view and revoke one's quoted posts (#35578)

app/policies/quote_policy.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class QuotePolicy < ApplicationPolicy
+  def revoke?
+    record.quoted_account_id.present? && record.quoted_account_id == current_account&.id
+  end
+end

app/policies/status_policy.rb

@@ -36,6 +36,10 @@ class StatusPolicy < ApplicationPolicy
     owned?
   end
 
+  def list_quotes?
+    owned?
+  end
+
   alias unreblog? destroy?
 
   def update?