feat: Add EncodingError

Change method signatures to expect it and raise it where it makes sense

--- don't change below this line ---
ENG-4076 <#DTT#>

src/encoding/swap_encoder.rs

@@ -1,12 +1,17 @@
-use anyhow::Error;
-
-use crate::encoding::models::{EncodingContext, Swap};
+use crate::encoding::{
+    errors::EncodingError,
+    models::{EncodingContext, Swap},
+};
 
 #[allow(dead_code)]
 pub trait SwapEncoder: Sync + Send {
     fn new(executor_address: String) -> Self
     where
         Self: Sized;
-    fn encode_swap(&self, swap: Swap, encoding_context: EncodingContext) -> Result<Vec<u8>, Error>;
+    fn encode_swap(
+        &self,
+        swap: Swap,
+        encoding_context: EncodingContext,
+    ) -> Result<Vec<u8>, EncodingError>;
     fn executor_address(&self) -> &str;
 }