feat: add support for /pl_c/ images

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src/invidious/routes/images.cr

@@ -134,6 +134,27 @@ module Invidious::Routes::Images
     end
   end
 
+  def self.pl_c_image(env)
+    id = env.params.url["id"]
+    name = env.params.url["name"]
+    url = env.request.resource
+
+    headers = HTTP::Headers.new
+
+    REQUEST_HEADERS_WHITELIST.each do |header|
+      if env.request.headers[header]?
+        headers[header] = env.request.headers[header]
+      end
+    end
+
+    begin
+      get_ytimg_pool("i").client &.get(url, headers) do |resp|
+        return self.proxy_image(env, resp)
+      end
+    rescue ex
+    end
+  end
+
   private def self.proxy_image(env, response)
     env.response.status_code = response.status_code
     response.headers.each do |key, value|

src/invidious/routing.cr

@@ -222,6 +222,7 @@ 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
   end
 
   def register_companion_routes