Start dummy implementation of InterpreterEnv for Env in witness

msm/src/serialization/witness.rs

@@ -1,5 +1,7 @@
 use ark_ff::Field;
 
+use crate::columns::Column;
+use crate::serialization::interpreter::InterpreterEnv;
 use crate::LIMBS_NUM;
 
 /// Environment for the serializer interpreter
@@ -16,6 +18,18 @@ pub struct Env<const N: usize, Fp> {
     pub intermediate_limbs: [Fp; 19],
 }
 
+impl<const N: usize, Fp: Field> InterpreterEnv for Env<N, Fp> {
+    type Position = Column;
+
+    // FIXME: is u128 ok? I think so, we only have 15 bits, 88 bits and 4 bits
+    // values. Let's see later
+    type Variable = u128;
+
+    fn deserialize_field_element(&mut self) {
+        // TODO
+    }
+}
+
 impl<const N: usize, Fp: Field> Env<N, Fp> {
     pub fn create(kimchi_limbs: [[Fp; 3]; N]) -> Self {
         Self {