feat: Support Curve ETH

Curve pools use a different address from ETH (native token)

- Pass Chain into the SwapEncoderBuilder and SwapEncoder
- Add native_token_curve_address and native_token_address to CurveSwapEncoder
- Added integration test for this curve case

--- don't change below this line ---
ENG-4306 Took 1 hour 4 minutes


Took 11 seconds

src/encoding/evm/swap_encoder/builder.rs

@@ -4,6 +4,7 @@ use crate::encoding::{
         BalancerV2SwapEncoder, CurveSwapEncoder, EkuboSwapEncoder, UniswapV2SwapEncoder,
         UniswapV3SwapEncoder, UniswapV4SwapEncoder,
     },
+    models::Chain,
     swap_encoder::SwapEncoder,
 };
 
@@ -11,27 +12,43 @@ use crate::encoding::{
 pub struct SwapEncoderBuilder {
     protocol_system: String,
     executor_address: String,
+    chain: Chain,
 }
 
 impl SwapEncoderBuilder {
-    pub fn new(protocol_system: &str, executor_address: &str) -> Self {
+    pub fn new(protocol_system: &str, executor_address: &str, chain: Chain) -> Self {
         SwapEncoderBuilder {
             protocol_system: protocol_system.to_string(),
             executor_address: executor_address.to_string(),
+            chain,
         }
     }
 
     pub fn build(self) -> Result<Box<dyn SwapEncoder>, EncodingError> {
         match self.protocol_system.as_str() {
-            "uniswap_v2" => Ok(Box::new(UniswapV2SwapEncoder::new(self.executor_address))),
-            "sushiswap_v2" => Ok(Box::new(UniswapV2SwapEncoder::new(self.executor_address))),
-            "pancakeswap_v2" => Ok(Box::new(UniswapV2SwapEncoder::new(self.executor_address))),
-            "vm:balancer_v2" => Ok(Box::new(BalancerV2SwapEncoder::new(self.executor_address))),
-            "uniswap_v3" => Ok(Box::new(UniswapV3SwapEncoder::new(self.executor_address))),
-            "pancakeswap_v3" => Ok(Box::new(UniswapV3SwapEncoder::new(self.executor_address))),
-            "uniswap_v4" => Ok(Box::new(UniswapV4SwapEncoder::new(self.executor_address))),
-            "ekubo_v2" => Ok(Box::new(EkuboSwapEncoder::new(self.executor_address))),
-            "vm:curve" => Ok(Box::new(CurveSwapEncoder::new(self.executor_address))),
+            "uniswap_v2" => {
+                Ok(Box::new(UniswapV2SwapEncoder::new(self.executor_address, self.chain)?))
+            }
+            "sushiswap_v2" => {
+                Ok(Box::new(UniswapV2SwapEncoder::new(self.executor_address, self.chain)?))
+            }
+            "pancakeswap_v2" => {
+                Ok(Box::new(UniswapV2SwapEncoder::new(self.executor_address, self.chain)?))
+            }
+            "vm:balancer_v2" => {
+                Ok(Box::new(BalancerV2SwapEncoder::new(self.executor_address, self.chain)?))
+            }
+            "uniswap_v3" => {
+                Ok(Box::new(UniswapV3SwapEncoder::new(self.executor_address, self.chain)?))
+            }
+            "pancakeswap_v3" => {
+                Ok(Box::new(UniswapV3SwapEncoder::new(self.executor_address, self.chain)?))
+            }
+            "uniswap_v4" => {
+                Ok(Box::new(UniswapV4SwapEncoder::new(self.executor_address, self.chain)?))
+            }
+            "ekubo_v2" => Ok(Box::new(EkuboSwapEncoder::new(self.executor_address, self.chain)?)),
+            "vm:curve" => Ok(Box::new(CurveSwapEncoder::new(self.executor_address, self.chain)?)),
             _ => Err(EncodingError::FatalError(format!(
                 "Unknown protocol system: {}",
                 self.protocol_system