Add process event stream for backtests

crates/fidc-core/src/events.rs

@@ -89,3 +89,40 @@ pub struct AccountEvent {
     pub total_equity: f64,
     pub note: String,
 }
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+pub enum ProcessEventKind {
+    PreBeforeTrading,
+    BeforeTrading,
+    PostBeforeTrading,
+    PreOpenAuction,
+    OpenAuction,
+    PostOpenAuction,
+    PreOnDay,
+    OnDay,
+    PostOnDay,
+    PreAfterTrading,
+    AfterTrading,
+    PostAfterTrading,
+    PreSettlement,
+    Settlement,
+    PostSettlement,
+    OrderPendingNew,
+    OrderCreationPass,
+    OrderUnsolicitedUpdate,
+    Trade,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ProcessEvent {
+    #[serde(with = "date_format")]
+    pub date: NaiveDate,
+    pub kind: ProcessEventKind,
+    #[serde(default)]
+    pub order_id: Option<u64>,
+    #[serde(default)]
+    pub symbol: Option<String>,
+    #[serde(default)]
+    pub side: Option<OrderSide>,
+    pub detail: String,
+}