StatusView: add quote_visible param

lib/pleroma/web/api_spec/schemas/status.ex

@@ -204,6 +204,10 @@ defmodule Pleroma.Web.ApiSpec.Schemas.Status do
             nullable: true,
             description: "URL of the quoted status"
           },
+          quote_visible: %Schema{
+            type: :boolean,
+            description: "`true` if the quoted post is visible to the user"
+          },
           local: %Schema{
             type: :boolean,
             description: "`true` if the post was made on the local instance"

lib/pleroma/web/mastodon_api/views/status_view.ex

@@ -432,6 +432,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
         in_reply_to_account_acct: reply_to_user && reply_to_user.nickname,
         quote: quote_post,
         quote_url: object.data["quoteUrl"],
+        quote_visible: visible_for_user?(quote_activity, opts[:for]),
         content: %{"text/plain" => content_plaintext},
         spoiler_text: %{"text/plain" => summary},
         expires_at: expires_at,