Feature: deserialize AIR private input

Added an implementation of `From<AirPrivateInputSerializable>` for
AirPrivateInput.

vm/src/air_private_input.rs

@@ -135,6 +135,20 @@ impl AirPrivateInput {
     }
 }
 
+impl From<AirPrivateInputSerializable> for AirPrivateInput {
+    fn from(private_input: AirPrivateInputSerializable) -> Self {
+        Self(HashMap::from([
+            ("pedersen", private_input.pedersen),
+            ("range_check", private_input.range_check),
+            ("ecdsa", private_input.ecdsa),
+            ("bitwise", private_input.bitwise),
+            ("ec_op", private_input.ec_op),
+            ("keccak", private_input.keccak),
+            ("poseidon", private_input.poseidon),
+        ]))
+    }
+}
+
 impl AirPrivateInputSerializable {
     pub fn serialize_json(&self) -> Result<String, serde_json::Error> {
         serde_json::to_string_pretty(&self)