feat(lazer/adk): Add asset id

lazer/sdk/rust/protocol/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pyth-lazer-protocol"
-version = "0.20.1"
+version = "0.20.2"
 edition = "2021"
 description = "Pyth Lazer SDK - protocol types."
 license = "Apache-2.0"

lazer/sdk/rust/protocol/src/lib.rs

@@ -34,6 +34,11 @@ pub use crate::{
     symbol_state::SymbolState,
 };
 
+#[derive(
+    Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord, Serialize, Deserialize, From, Into,
+)]
+pub struct AssetId(pub u32);
+
 #[derive(
     Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord, Serialize, Deserialize, From, Into,
 )]
@@ -84,6 +89,34 @@ pub enum PriceFeedProperty {
     // More fields may be added later.
 }
 
+#[derive(Debug, Clone, Deserialize)]
+#[serde(rename_all = "kebab-case")]
+pub enum AssetClass {
+    Crypto,
+    Fx,
+    Equity,
+    Metal,
+    Rates,
+    Nav,
+    Commodity,
+    FundingRate,
+}
+
+impl AssetClass {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            AssetClass::Crypto => "crypto",
+            AssetClass::Fx => "fx",
+            AssetClass::Equity => "equity",
+            AssetClass::Metal => "metal",
+            AssetClass::Rates => "rates",
+            AssetClass::Nav => "nav",
+            AssetClass::Commodity => "commodity",
+            AssetClass::FundingRate => "funding-rate",
+        }
+    }
+}
+
 // Operation and coefficient for converting value to mantissa.
 enum ExponentFactor {
     // mantissa = value * factor