Add eventType enum

Author: dev-john-nguyen

index.d.ts

@@ -498,11 +498,22 @@ declare module 'react-native-health' {
     locations: LocationValue[]
   }
 
+  export enum EventType {
+    Pause = 'pause',
+    Resume = 'resume',
+    MotionPaused = 'motion paused',
+    MotionResumed = 'motion resumed',
+    PausedOrResumeRequest = 'pause or resume request',
+    Lap = 'lap',
+    Segment = 'segment',
+    Marker = 'marker'
+  }
+
   export type HKWorkoutEventType = {
     endDate: string
     startDate: string
     eventTypeInt: number
-    eventType: string
+    eventType: EventType
   }
 
   export interface HKWorkoutQueriedSampleType {