merge: Add separate redis for rate limit (!908)

View MR for information: https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/908

Approved-by: dakkar <dakkar@thenautilus.net>
Approved-by: Marie <github@yuugi.dev>

packages/backend/src/di-symbols.ts

@@ -13,6 +13,7 @@ export const DI = {
 	redisForSub: Symbol('redisForSub'),
 	redisForTimelines: Symbol('redisForTimelines'),
 	redisForReactions: Symbol('redisForReactions'),
+	redisForRateLimit: Symbol('redisForRateLimit'),
 
 	//#region Repositories
 	usersRepository: Symbol('usersRepository'),