Encode AddTranche.price as little endian

pallets/connectors/src/message.rs

@@ -119,7 +119,10 @@ impl<
 				message.append(&mut tranche_id.encode());
 				message.append(&mut token_name.encode());
 				message.append(&mut token_symbol.encode());
-				message.append(&mut price.encode());
+
+				let mut encoded_price = price.encode();
+				encoded_price.reverse();
+				message.append(&mut encoded_price);
 
 				message
 			}
@@ -274,7 +277,7 @@ mod tests {
 
 			// We encode the encoded bytes as hex to verify it's what we expect
 			let encoded_hex = hex::encode(encoded_bytes.clone());
-			let expected_hex = "020000000000bce1a40000000000000000000000000000000105050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050606060606060606060606060606060606060606060606060606060606060606000000e83c80d09f3c2e3b0300000000";
+			let expected_hex = "020000000000bce1a4000000000000000000000000000000010505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505050505060606060606060606060606060606060606060606060606060606060606060600000000033b2e3c9fd0803ce8000000";
 			assert_eq!(expected_hex, encoded_hex);
 
 			// Now decode the bytes encoded as hex back to bytes and verify it's the same as