fees: refactor: rename fees to block_policy_estimator

- Also move it to policy/fees and update the includes

src/test/fuzz/fees.cpp

@@ -4,7 +4,7 @@
 
 #include <common/messages.h>
 #include <consensus/amount.h>
-#include <policy/fees.h>
+#include <policy/fees/block_policy_estimator.h>
 #include <test/fuzz/FuzzedDataProvider.h>
 #include <test/fuzz/fuzz.h>
 #include <test/fuzz/util.h>

src/test/fuzz/kitchen_sink.cpp

@@ -5,7 +5,7 @@
 #include <common/messages.h>
 #include <merkleblock.h>
 #include <node/types.h>
-#include <policy/fees.h>
+#include <policy/fees/block_policy_estimator.h>
 #include <rpc/util.h>
 #include <test/fuzz/FuzzedDataProvider.h>
 #include <test/fuzz/fuzz.h>

src/test/fuzz/policy_estimator.cpp

@@ -3,7 +3,7 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <kernel/mempool_entry.h>
-#include <policy/fees.h>
+#include <policy/fees/block_policy_estimator.h>
 #include <policy/fees_args.h>
 #include <primitives/transaction.h>
 #include <streams.h>

src/test/fuzz/policy_estimator_io.cpp

@@ -2,7 +2,7 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include <policy/fees.h>
+#include <policy/fees/block_policy_estimator.h>
 #include <policy/fees_args.h>
 #include <streams.h>
 #include <test/fuzz/FuzzedDataProvider.h>