[Statsig] Track like/follow metadata (#3435)

* Track becoming mutuals

* Track poster/liker status

* Track post and followee clout

* Track follower and liker clout

* Extract utility

src/lib/statsig/statsig.tsx

@@ -43,6 +43,14 @@ export function attachRouteToLogEvents(
   getCurrentRouteName = getRouteName
 }
 
+export function toClout(n: number | null | undefined): number | undefined {
+  if (n == null) {
+    return undefined
+  } else {
+    return Math.max(0, Math.round(Math.log(n)))
+  }
+}
+
 export function logEvent<E extends keyof LogEvents>(
   eventName: E & string,
   rawMetadata: LogEvents[E] & FlatJSONRecord,