Make CreateSessionKey parameters optional with defaults

Updated the CreateSessionKey method to provide default values for its parameters, allowing them to be optional. This improves usability by enabling callers to omit parameters, which will then be set to sensible defaults within the method.

Author: 0xFirekeeper

Thirdweb/Thirdweb.Wallets/SmartWallet/SmartWallet.cs

@@ -402,12 +402,12 @@ public async Task<List<SignerPermissions>> GetAllActiveSigners()
     /// <param name="reqValidityEndTimestamp">The timestamp when the request validity ends. Make use of our Utils to get UNIX timestamps.</param>
     public async Task<ThirdwebTransactionReceipt> CreateSessionKey(
         string signerAddress,
-        List<string> approvedTargets,
-        string nativeTokenLimitPerTransactionInWei,
-        string permissionStartTimestamp,
-        string permissionEndTimestamp,
-        string reqValidityStartTimestamp,
-        string reqValidityEndTimestamp
+        List<string> approvedTargets = null,
+        string nativeTokenLimitPerTransactionInWei = null,
+        string permissionStartTimestamp = null,
+        string permissionEndTimestamp = null,
+        string reqValidityStartTimestamp = null,
+        string reqValidityEndTimestamp = null
     )
     {
         if (await Utils.IsZkSync(this.Client, this.ActiveChainId).ConfigureAwait(false))
@@ -419,12 +419,12 @@ string reqValidityEndTimestamp
         {
             Signer = signerAddress,
             IsAdmin = 0,
-            ApprovedTargets = approvedTargets,
-            NativeTokenLimitPerTransaction = BigInteger.Parse(nativeTokenLimitPerTransactionInWei),
-            PermissionStartTimestamp = BigInteger.Parse(permissionStartTimestamp),
-            PermissionEndTimestamp = BigInteger.Parse(permissionEndTimestamp),
-            ReqValidityStartTimestamp = BigInteger.Parse(reqValidityStartTimestamp),
-            ReqValidityEndTimestamp = BigInteger.Parse(reqValidityEndTimestamp),
+            ApprovedTargets = approvedTargets ?? new List<string> { Constants.ADDRESS_ZERO },
+            NativeTokenLimitPerTransaction = BigInteger.Parse(nativeTokenLimitPerTransactionInWei ?? "0"),
+            PermissionStartTimestamp = BigInteger.Parse(permissionStartTimestamp ?? "0"),
+            PermissionEndTimestamp = BigInteger.Parse(permissionEndTimestamp ?? Utils.GetUnixTimeStampIn10Years().ToString()),
+            ReqValidityStartTimestamp = BigInteger.Parse(reqValidityStartTimestamp ?? "0"),
+            ReqValidityEndTimestamp = BigInteger.Parse(reqValidityEndTimestamp ?? Utils.GetUnixTimeStampIn10Years().ToString()),
             Uid = Guid.NewGuid().ToByteArray(),
         };