fix(striker-ui): add interface for typed EventEmitter

* 'new EventEmitter() as TypedEventEmitter<{ submit: [...args] }>'

striker-ui/types/TypedEventEmitter.d.ts

@@ -0,0 +1,21 @@
+declare interface TypedEventEmitter<
+  MapToEventListenerParameters extends Record<string | symbol, unknown[]>,
+  EventName = keyof MapToEventListenerParameters,
+> extends import('events').EventEmitter {
+  emit(
+    event: EventName,
+    ...args: MapToEventListenerParameters[EventName]
+  ): boolean;
+
+  listenerCount(event: EventName): number;
+
+  on(
+    event: EventName,
+    listener: (...args: MapToEventListenerParameters[EventName]) => void,
+  ): this;
+
+  once(
+    event: EventName,
+    listener: (...args: MapToEventListenerParameters[EventName]) => void,
+  ): this;
+}