feat: add sorted set commands (momentohq#123)

Adds the sorted set commands for the Momento protocol to the SDK.

src/lib.rs

@@ -15,3 +15,8 @@ pub use crate::simple_cache_client::{
 };
 
 pub type MomentoResult<T> = Result<T, MomentoError>;
+
+pub mod sorted_set {
+    pub use momento_protos::cache_client::sorted_set_fetch_request::{Order, Range};
+    pub use momento_protos::cache_client::SortedSetElement;
+}

src/response/cache_sorted_set_fetch_response.rs

@@ -0,0 +1,7 @@
+use momento_protos::cache_client::SortedSetElement;
+
+#[derive(Debug)]
+#[non_exhaustive]
+pub struct MomentoSortedSetFetchResponse {
+    pub value: Option<Vec<SortedSetElement>>,
+}

src/response/mod.rs

@@ -3,6 +3,7 @@ mod cache_dictionary_get_response;
 mod cache_dictionary_increment_response;
 mod cache_get_response;
 mod cache_set_fetch_response;
+mod cache_sorted_set_fetch_response;
 mod create_signing_key_response;
 mod error;
 mod flush_cache_response;
@@ -14,6 +15,7 @@ pub use self::cache_dictionary_get_response::*;
 pub use self::cache_dictionary_increment_response::*;
 pub use self::cache_get_response::*;
 pub use self::cache_set_fetch_response::*;
+pub use self::cache_sorted_set_fetch_response::*;
 pub use self::create_signing_key_response::*;
 pub use self::error::*;
 pub use self::flush_cache_response::*;