fix: set from field when estimating gas (#37)

In some cases `tx.origin` might be checked, so we should set `from` in
the request, otherwise these calls revert

crates/wallet/src/lib.rs

@@ -272,17 +272,20 @@ where
         request.chain_id = Some(self.chain_id());
 
         // set gas limit
+        // note: we also set the `from` field here to correctly estimate for contracts that use e.g.
+        // `tx.origin`
+        request.from = Some(NetworkWallet::<Ethereum>::default_signer_address(&self.inner.wallet));
         let (estimate, base_fee) = tokio::join!(
             EthCall::estimate_gas_at(&self.inner.eth_api, request.clone(), BlockId::latest(), None),
             LoadFee::eip1559_fees(&self.inner.eth_api, None, None)
         );
-
         let estimate = estimate.map_err(Into::into)?;
         if estimate >= U256::from(350_000) {
             return Err(OdysseyWalletError::GasEstimateTooHigh { estimate: estimate.to() }.into());
         }
         request.gas = Some(estimate.to());
 
+        // set gas price
         let (base_fee, _) = base_fee.map_err(|_| OdysseyWalletError::InvalidTransactionRequest)?;
         let max_priority_fee_per_gas = 1_000_000_000; // 1 gwei
         request.max_fee_per_gas = Some(base_fee.to::<u128>() + max_priority_fee_per_gas);