GMX v2 - Trading (#7)

* Move PrivateKeys.cs

* Update gitignore

* Update gitignore

* updt

* Extract GmxServiceTests.cs

* Refact

* update todo

* Update code

* Fix hashdata

* Replace static token hashed datas

* Set allowance

* Add get orders

* Add get orders tests

* Add ignore

* add close orders

* revert

* Add get gas limit

* Start increasePosition. Todo: Finish GetExecutionFee and estimateGas

* little refact

* Update gitignore

* Fix namespaces and clean repo

* Add tests samples

* Add execution fee

* Add increase position

* Handle backtest on the frontend

* Add tests

* Update increase

* Test increase

* fix increase

* Fix size

* Start get position

* Update get positions

* Fix get position

* Update rpc and trade mappers

* Finish close position

* Fix leverage

src/Managing.Core/FileHelpers.cs

@@ -0,0 +1,24 @@
+using System.Reflection;
+using System.Text.Json;
+
+namespace Managing.Core;
+
+public static class FileHelpers
+{
+    public static T ReadJson<T>(string path)
+    {
+        string assemblyLocation = Assembly.GetExecutingAssembly().Location;
+
+        string assemblyDirectory = Path.GetDirectoryName(assemblyLocation);
+
+        if (assemblyDirectory != null)
+        {
+            var pathToReadFrom = Path.Combine(assemblyDirectory, path);
+            // Reads the content of the JSON file.
+            var json = File.ReadAllText(pathToReadFrom);
+            return JsonSerializer.Deserialize<T>(json);
+        }
+
+        return default;
+    }
+}