Add event type

Cargo.toml

@@ -10,3 +10,5 @@ publish = true
 description = "An OpenADR 3.0 VTN/VEN implementation"
 
 [dependencies]
+serde = { version = "1.0.203", features = ["derive"] }
+serde_json = "1.0.117"

src/lib.rs

@@ -0,0 +1,40 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize)]
+#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
+pub enum Event {
+    Simple,
+    Price,
+    ChargeStateSetpoint,
+    DispatchSetpoint,
+    DispatchSetpointRelative,
+    ControlSetpoint,
+    ExportPrice,
+    GHG,
+    Curve,
+    OLS,
+    ImportCapacitySubscription,
+    ImportCapacityReservation,
+    ImportCapacityReservationFee,
+    ImportCapacityAvailable,
+    ImportCapacityAvailablePrice,
+    ExportCapacitySubscription,
+    ExportCapacityReservation,
+    ExportCapacityReservationFee,
+    ExportCapacityAvailable,
+    ExportCapacityAvailablePrice,
+    ImportCapacityLimit,
+    ExportCapacityLimit,
+    AlertGridEmergency,
+    AlertBlackStart,
+    AlertPossibleOutage,
+    AlertFlexAlert,
+    AlertFire,
+    AlertFreezing,
+    AlertWind,
+    AlertTsunami,
+    AlertAirQuality,
+    AlertOther,
+    CTA2045Reboot,
+    CTA2045SetOverrideStatus,
+}