feat: add traits to the index structures

tarantool/src/index.rs

@@ -240,7 +240,7 @@ pub type IndexSequenceOption = SequenceOpt;
 /// Sequence option for new or updated index.
 ///
 /// For details see [specifying a sequence in create_index](https://www.tarantool.io/en/doc/latest/reference/reference_lua/box_schema_sequence/create_index/#box-schema-sequence-create-index).
-#[derive(Serialize, tlua::Push)]
+#[derive(Deserialize, Serialize, PartialEq, tlua::Push)]
 pub enum SequenceOpt {
     IdAndField(SeqSpec),
     AutoGenerated(bool),
@@ -287,7 +287,7 @@ impl From<bool> for SequenceOpt {
     }
 }
 
-#[derive(Serialize, tlua::Push)]
+#[derive(Deserialize, Serialize, PartialEq, tlua::Push)]
 pub struct SeqSpec {
     id: Option<NumOrStr>,
     field: Option<NumOrStr>,