GreenField API: Wallet API (#2246)

* GreenField: Wallet API

* more work

* wip

* rough fiunish of transaction sending api

* Allow to create tx without broadcasting and small fixes

* Refactor Wallet Receive feature ad add greenfield api for address reserve for wallet

* add wallet api client

* add docs

* fix json converter tags

* fixes and add wallet tests

* fix tests

* fix rebase

* fixes

* just pass the tests already

* ugggh

* small cleanup

* revert int support in numeric string converter and make block id as native number in json

* fix LN endpoint

* try fix flaky test

* Revert "try fix flaky test"

This reverts commit 2e0d256325b892f7741325dcbab01196f74d182a.

* try fix other flaky test

* return proepr error if fee rate could not be fetched

* try fix test again

* reduce fee related logic for wallet api

* try reduce code changes for pr scope

* change auth logic for initial release of wallet api

BTCPayServer.Client/Models/CreateOnChainTransactionRequest.cs

@@ -0,0 +1,30 @@
+using System.Collections.Generic;
+using BTCPayServer.JsonConverters;
+using NBitcoin;
+using NBitcoin.JsonConverters;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.Models
+{
+    public class CreateOnChainTransactionRequest
+    {
+
+        public class CreateOnChainTransactionRequestDestination
+        {
+            public string Destination { get; set; }
+            [JsonConverter(typeof(NumericStringJsonConverter))]
+            public decimal? Amount { get; set; }
+            public bool SubtractFromAmount { get; set; }
+        }
+        [JsonConverter(typeof(FeeRateJsonConverter))]
+        public FeeRate FeeRate { get; set; }
+        public bool ProceedWithPayjoin { get; set; }= true;
+        public bool ProceedWithBroadcast { get; set; } = true;
+        public bool NoChange { get; set; } = false;
+        [JsonProperty(ItemConverterType = typeof(OutpointJsonConverter))]
+        public List<OutPoint> SelectedInputs { get; set; } = null;
+        public List<CreateOnChainTransactionRequestDestination> Destinations { get; set; }
+        [JsonProperty("rbf")]
+        public bool? RBF { get; set; } = null;
+    }
+}