Feat: enable signAllTransactions for Ingame & External walllets (#236)

Author: owais-star

Runtime/Plugins/Phantom.jslib

@@ -155,7 +155,7 @@ mergeInto(LibraryManager.library, {
       var serializedSignedTransactions = [];
       for (var i = 0; i < signedTransactions.length; i++) {
         var signedTransaction = signedTransactions[i];
-        var txStr = signedTransaction.serialize().toString("base64");
+        var txStr = Buffer.from(signedTransaction.serialize()).toString("base64");
         serializedSignedTransactions.push(txStr);
       }
       var txsStr = serializedSignedTransactions.join(",");

Runtime/Plugins/Phantom.jslib.meta

@@ -192,4 +192,57 @@ public class PhantomWalletMessageSignedSuccessfully
     {
         public string signature;
     }
+
+        [Serializable]
+    public class PhantomWalletOptions
+    {
+        [SerializeField]
+        private string apiVersion = "v1";
+        public virtual string ApiVersion
+        {
+            get => apiVersion;
+            set => apiVersion = value;
+        }
+
+        [SerializeField]
+        private string appMetaDataUrl = "https://github.com/magicblock-labs/Solana.Unity-SDK";
+        public virtual string AppMetaDataUrl
+        {
+            get => appMetaDataUrl;
+            set => appMetaDataUrl = value;
+        }
+
+        [SerializeField]
+        private string deeplinkUrlScheme = "unitydl";
+        public virtual string DeeplinkUrlScheme
+        {
+            get => deeplinkUrlScheme;
+            set => deeplinkUrlScheme = value;
+        }
+
+        [SerializeField]
+        private string sessionEncryptionPassword = "use a strong password";
+        public virtual string SessionEncryptionPassword
+        {
+            get => sessionEncryptionPassword;
+            set => sessionEncryptionPassword = value;
+        }
+
+        [SerializeField]
+        private string baseUrl = "https://phantom.app";
+        public virtual string BaseUrl
+        {
+            get => baseUrl;
+            set => baseUrl = value;
+        }
+
+        [SerializeField]
+        private string walletName = "phantom";
+        public virtual string WalletName
+        {
+            get => walletName;
+            set => walletName = value;
+        }
+    }
+
 }

Runtime/Plugins/SolanaWalletAdapterWebGL/SolanaWalletAdapterWebGL.jslib

@@ -107,7 +107,11 @@ protected override Task<Transaction> _SignTransaction(Transaction transaction)
 
         protected override Task<Transaction[]> _SignAllTransactions(Transaction[] transactions)
         {
-            throw new NotImplementedException();
+            foreach (Transaction transaction in transactions)
+            {
+                transaction.PartialSign(Account);
+            }
+            return Task.FromResult(transactions);
         }
 
         public override Task<byte[]> SignMessage(byte[] message)