Pool: Refactor logic for request methods

Make non-block request method internally call
the block based request method.

src/invidious/connection/pool.cr

@@ -25,7 +25,7 @@ module Invidious::ConnectionPool
     end
 
     {% for method in %w[get post put patch delete head options] %}
-      def {{method.id}}(*args, **kwargs)
+      def {{method.id}}(*args, **kwargs, &)
         self.client do | client |
           client.{{method.id}}(*args, **kwargs) do | response |
 
@@ -39,14 +39,12 @@ module Invidious::ConnectionPool
       end
 
       def {{method.id}}(*args, **kwargs)
-        self.client do | client |
-          return response = client.{{method.id}}(*args, **kwargs)
+        {{method.id}}(*args, **kwargs) do | response |
+          return response
         ensure
-          if response
           response.body_io?.try &. skip_to_end
         end
       end
-      end
     {% end %}
 
     # Checks out a client in the pool