feat: The execution structs should receiver tycho_core Chain

and convert it later to an execution model Chain

--- don't change below this line ---
ENG-4088 Took 8 minutes

src/encoding/strategy_encoder.rs

@@ -1,10 +1,6 @@
-use tycho_core::Bytes;
+use tycho_core::{dto::Chain, Bytes};
 
-use crate::encoding::{
-    errors::EncodingError,
-    models::{Chain, Solution},
-    swap_encoder::SwapEncoder,
-};
+use crate::encoding::{errors::EncodingError, models::Solution, swap_encoder::SwapEncoder};
 
 /// Encodes a solution using a specific strategy.
 pub trait StrategyEncoder {