[chore] update database caching library (#1040)

* convert most of the caches to use result.Cache{}

* add caching of emojis

* fix issues causing failing tests

* update go-cache/v2 instances with v3

* fix getnotification

* add a note about the left-in StatusCreate comment

* update EmojiCategory db access to use new result.Cache{}

* fix possible panic in getstatusparents

* further proof that kim is not stinky

internal/db/bundb/tombstone.go

@@ -43,7 +43,7 @@ func (t *tombstoneDB) init() {
 		t2 := new(gtsmodel.Tombstone)
 		*t2 = *t1
 		return t2
-	}, 1000)
+	}, 100)
 
 	// Set cache TTL and start sweep routine
 	t.cache.SetTTL(time.Minute*5, false)