Have a PSBTAnalysis state that indicates invalid PSBT

Invalid PSBTs need to be re-created, so the next role is the
Creator (new PSBTRole). Additionally, we need to know what went
wrong so an error field was added to PSBTAnalysis.

A PSBTAnalysis indicating invalid will have empty everything,
next will be set to PSBTRole::CREATOR, and an error message.

Github-Pull: #17524
Rebased-From: 638e40cb60

src/psbt.h

@@ -552,6 +552,7 @@ struct PartiallySignedTransaction
 };
 
 enum class PSBTRole {
+    CREATOR,
     UPDATER,
     SIGNER,
     FINALIZER,