util: add TransactionError includes and namespace declarations

Add TransactionError to node namespace and include it directly instead of
relying on indirect include through common/messages.h

This is a followup to a previous commit which moved the TransactionError enum.
These changes were done in a separate followup just to keep the previous commit
more minimal and easy to review.

src/psbt.cpp

@@ -4,12 +4,12 @@
 
 #include <psbt.h>
 
+#include <node/types.h>
 #include <policy/policy.h>
 #include <script/signingprovider.h>
 #include <util/check.h>
 #include <util/strencodings.h>
 
-
 PartiallySignedTransaction::PartiallySignedTransaction(const CMutableTransaction& tx) : tx(tx)
 {
     inputs.resize(tx.vin.size());