Add a default commitment-level (#10935)

sdk/src/commitment_config.rs

@@ -1,17 +1,9 @@
-#[derive(Serialize, Deserialize, Clone, Copy, Debug, PartialEq)]
+#[derive(Serialize, Deserialize, Default, Clone, Copy, Debug, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct CommitmentConfig {
     pub commitment: CommitmentLevel,
 }
 
-impl Default for CommitmentConfig {
-    fn default() -> Self {
-        CommitmentConfig {
-            commitment: CommitmentLevel::Max,
-        }
-    }
-}
-
 impl CommitmentConfig {
     pub fn recent() -> Self {
         Self {
@@ -61,3 +53,9 @@ pub enum CommitmentLevel {
     Single,
     SingleGossip,
 }
+
+impl Default for CommitmentLevel {
+    fn default() -> Self {
+        Self::Max
+    }
+}