refactor: move CreatedTransactionResult to types.h

So it can be used by external modules without requiring
wallet.h dependency.

src/wallet/spend.h

@@ -10,6 +10,7 @@
 #include <util/result.h>
 #include <wallet/coinselection.h>
 #include <wallet/transaction.h>
+#include <wallet/types.h>
 #include <wallet/wallet.h>
 
 #include <map>
@@ -186,17 +187,6 @@ util::Result<SelectionResult> SelectCoins(const CWallet& wallet, CoinsResult& av
                                           const CAmount& nTargetValue, const CCoinControl& coin_control,
                                           const CoinSelectionParams& coin_selection_params) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet);
 
-struct CreatedTransactionResult
-{
-    CTransactionRef tx;
-    CAmount fee;
-    FeeCalculation fee_calc;
-    std::optional<unsigned int> change_pos;
-
-    CreatedTransactionResult(CTransactionRef _tx, CAmount _fee, std::optional<unsigned int> _change_pos, const FeeCalculation& _fee_calc)
-        : tx(_tx), fee(_fee), fee_calc(_fee_calc), change_pos(_change_pos) {}
-};
-
 /**
  * Set a height-based locktime for new transactions (uses the height of the
  * current chain tip unless we are not synced with the current chain

src/wallet/types.h

@@ -14,7 +14,7 @@
 #ifndef BITCOIN_WALLET_TYPES_H
 #define BITCOIN_WALLET_TYPES_H
 
-#include <type_traits>
+#include <policy/fees/block_policy_estimator.h>
 
 namespace wallet {
 /**
@@ -30,6 +30,18 @@ enum class AddressPurpose {
     SEND,
     REFUND, //!< Never set in current code may be present in older wallet databases
 };
+
+struct CreatedTransactionResult
+{
+    CTransactionRef tx;
+    CAmount fee;
+    FeeCalculation fee_calc;
+    std::optional<unsigned int> change_pos;
+
+    CreatedTransactionResult(CTransactionRef _tx, CAmount _fee, std::optional<unsigned int> _change_pos, const FeeCalculation& _fee_calc)
+            : tx(_tx), fee(_fee), fee_calc(_fee_calc), change_pos(_change_pos) {}
+};
+
 } // namespace wallet
 
 #endif // BITCOIN_WALLET_TYPES_H