Merge #20787: Use C++17 std::array deduction for OUTPUT_TYPES, ALL_FEE_ESTIMATE_HORIZONS

aaaa987840 refactor: Use C++17 std::array deduction for ALL_FEE_ESTIMATE_HORIZONS (MarcoFalke)
fa39cdd072 refactor: Use C++17 std::array deduction for OUTPUT_TYPES (MarcoFalke)

Pull request description:

  With the new C++17 array deduction rules, an array encompassing all values in an enum can be specified in the same header file that specifies the enum. This is useful to avoid having to repeatedly enumerate all enum values in the code. E.g. the RPC code, but also the fuzz code.

ACKs for top commit:
  theStack:
    cr ACK aaaa987840 ⚙️
  fanquake:
    ACK aaaa987840

Tree-SHA512: b71bd98f3ca07ddfec385735538ce89a4952e418b52dc990fb160187ccef1fc7ebc139d42988b6f7b48df24823af61f803b83d47fb7a3b82475f0c0b109bffb7

src/rpc/mining.cpp

@@ -1160,7 +1160,7 @@ static RPCHelpMan estimaterawfee()
 
     UniValue result(UniValue::VOBJ);
 
-    for (const FeeEstimateHorizon horizon : {FeeEstimateHorizon::SHORT_HALFLIFE, FeeEstimateHorizon::MED_HALFLIFE, FeeEstimateHorizon::LONG_HALFLIFE}) {
+    for (const FeeEstimateHorizon horizon : ALL_FEE_ESTIMATE_HORIZONS) {
         CFeeRate feeRate;
         EstimationResult buckets;