feat(abi): ✨ add AbiContractImporter and ContractAsset

Editor/Algorand.Unity.Editor/Importers/AbiContractImporter.cs

@@ -0,0 +1,21 @@
+using System.IO;
+using UnityEditor.AssetImporters;
+using UnityEngine;
+
+namespace Algorand.Unity.Experimental.Abi.Editor
+{
+    [ScriptedImporter(1, "contract.json")]
+    public class AbiContractImporter : ScriptedImporter
+    {
+        public override void OnImportAsset(AssetImportContext ctx)
+        {
+            var fileName = Path.GetFileNameWithoutExtension(ctx.assetPath);
+            var json = File.ReadAllText(ctx.assetPath);
+            var asset = ScriptableObject.CreateInstance<ContractAsset>();
+            asset.contract = AlgoApiSerializer.DeserializeJson<Contract>(json);
+            asset.name = fileName;
+            ctx.AddObjectToAsset("contract", asset);
+            ctx.SetMainObject(asset);
+        }
+    }
+}

Runtime/Algorand.Unity/AssemblyInfo.cs

@@ -1,3 +1,4 @@
 using System.Runtime.CompilerServices;
 
+[assembly: InternalsVisibleTo("Algorand.Unity.Editor")]
 [assembly: InternalsVisibleTo("Algorand.Unity.Tests")]

Runtime/Algorand.Unity/Experimental/Abi/ContractAsset.cs

@@ -0,0 +1,16 @@
+using UnityEngine;
+
+namespace Algorand.Unity.Experimental.Abi
+{
+    [HelpURL(DocUrl.Api + "Algorand.Unity.Experimental.Abi.ContractAsset.html")]
+    [CreateAssetMenu(menuName = "Algorand/Experimental/Abi Contract")]
+    public class ContractAsset : ScriptableObject
+    {
+        public Contract contract;
+
+        public static implicit operator Contract(ContractAsset asset)
+        {
+            return asset.contract;
+        }
+    }
+}