feat: UniswapV4 integration test and fixes

- Biggest issue: We must encode the executor address, not the router address, in the USV4 swap encoder

src/encoding/evm/swap_encoder/builder.rs

@@ -1,7 +1,7 @@
 use crate::encoding::{
     errors::EncodingError,
     evm::swap_encoder::swap_encoders::{
-        BalancerV2SwapEncoder, UniswapV2SwapEncoder, UniswapV3SwapEncoder,
+        BalancerV2SwapEncoder, UniswapV2SwapEncoder, UniswapV3SwapEncoder, UniswapV4SwapEncoder,
     },
     swap_encoder::SwapEncoder,
 };
@@ -26,7 +26,7 @@ impl SwapEncoderBuilder {
             "vm:balancer_v2" => Ok(Box::new(BalancerV2SwapEncoder::new(self.executor_address))),
             "uniswap_v3" => Ok(Box::new(UniswapV3SwapEncoder::new(self.executor_address))),
             // TODO replace this with V4 encoder once implemented
-            "uniswap_v4" => Ok(Box::new(UniswapV2SwapEncoder::new(self.executor_address))),
+            "uniswap_v4" => Ok(Box::new(UniswapV4SwapEncoder::new(self.executor_address))),
             _ => Err(EncodingError::FatalError(format!(
                 "Unknown protocol system: {}",
                 self.protocol_system