Add full support for status parameters (noreplies, solved, unsolved) to topic embed iframe

My feedback on this:

I think this is a nice idea, because it would help users keep track of the embedded post’s status.

Solved questions would furthermore help users from other communities know what is solved and not.

This would help more users answer questions. Why is this useful you might ask? It’s because unanswered questions are looking forward to be anawered. Embedding this would allow users from other communities to answer questions.