Add support for /pl_c and /tvfilm_banner paths (thumbnails used in some playlists) (#5742)

* feat: add support for /pl_c/ images

This path can be found on Podcast images.

* add support for /pl_c and /tvfilm_banner paths

* add support for /pl_c and /tvfilm_banner paths 2

* remove leftover comment

src/invidious/routes/images.cr

@@ -51,7 +51,7 @@ module Invidious::Routes::Images
   end
 
   # ??? maybe also for storyboards?
-  def self.s_p_image(env)
+  def self.s_p_image(env, authority = "i9")
     id = env.params.url["id"]
     name = env.params.url["name"]
     url = env.request.resource
@@ -65,13 +65,23 @@ module Invidious::Routes::Images
     end
 
     begin
-      get_ytimg_pool("i9").client &.get(url, headers) do |resp|
+      get_ytimg_pool(authority).client &.get(url, headers) do |resp|
         return self.proxy_image(env, resp)
       end
     rescue ex
     end
   end
 
+  # Both pl_c and tvfilm_banner use the same logic used in s_p_image(env)
+  # just with a different authority ("i").
+  def self.pl_c_image(env)
+    self.s_p_image(env, "i")
+  end
+
+  def self.tvfilm_banner_image(env)
+    self.s_p_image(env, "i")
+  end
+
   def self.yts_image(env)
     headers = HTTP::Headers.new
     REQUEST_HEADERS_WHITELIST.each do |header|

src/invidious/routing.cr

@@ -222,6 +222,8 @@ module Invidious::Routing
     get "/s_p/:id/:name", Routes::Images, :s_p_image
     get "/yts/img/:name", Routes::Images, :yts_image
     get "/vi/:id/:name", Routes::Images, :thumbnails
+    get "/pl_c/:id/:name", Routes::Images, :pl_c_image
+    get "/tvfilm_banner/:id/:name", Routes::Images, :tvfilm_banner_image
   end
 
   def register_companion_routes