Add type-safe AdjustedTime() getter to timedata

Also, fix includes.

The getter will be used in a future commit.

src/addrman_impl.h

@@ -12,6 +12,7 @@
 #include <serialize.h>
 #include <sync.h>
 #include <uint256.h>
+#include <timedata.h>
 
 #include <cstdint>
 #include <optional>

src/net_processing.cpp

@@ -29,6 +29,7 @@
 #include <scheduler.h>
 #include <streams.h>
 #include <sync.h>
+#include <timedata.h>
 #include <tinyformat.h>
 #include <txmempool.h>
 #include <txorphanage.h>

src/node/interfaces.cpp

@@ -36,7 +36,6 @@
 #include <shutdown.h>
 #include <support/allocators/secure.h>
 #include <sync.h>
-#include <timedata.h>
 #include <txmempool.h>
 #include <uint256.h>
 #include <univalue.h>

src/timedata.h

@@ -5,9 +5,12 @@
 #ifndef BITCOIN_TIMEDATA_H
 #define BITCOIN_TIMEDATA_H
 
+#include <util/time.h>
+
 #include <algorithm>
-#include <assert.h>
-#include <stdint.h>
+#include <cassert>
+#include <chrono>
+#include <cstdint>
 #include <vector>
 
 static const int64_t DEFAULT_MAX_TIME_ADJUSTMENT = 70 * 60;
@@ -73,6 +76,7 @@ public:
 /** Functions to keep track of adjusted P2P time */
 int64_t GetTimeOffset();
 int64_t GetAdjustedTime();
+inline NodeSeconds AdjustedTime() { return Now<NodeSeconds>() + std::chrono::seconds{GetTimeOffset()}; }
 void AddTimeData(const CNetAddr& ip, int64_t nTime);
 
 /**