fix: no cross-bot imports

packages/bot/src/core/blitzstars/getStatsInPeriod.ts

@@ -1,4 +1,5 @@
 import { BlitzStats, emptyAllStats, Region } from '@blitzkit/core';
+import { DiffedTankStats } from '@blitzkit/core/src/statistics/filterStats';
 import { Locale } from 'discord.js';
 import getTankHistories, {
   TankHistories,
@@ -14,11 +15,6 @@ const emptyTankHistoryNode: TankHistoryRaw = {
   all: emptyAllStats,
 };
 
-export interface DiffedTankStats {
-  diff: Record<number, BlitzStats>;
-  order: number[];
-}
-
 // BIG TODO: merge this neatly with diffNormalizedTankStats
 export default async function getStatsInPeriod(
   server: Region,