Fixed cache not updating on guild join

src/providers/Cache.ts

@@ -1,3 +1,4 @@
+import { Snowflake } from "discord-api-types";
 import Prisma from "./Prisma";
 
 class Cache {
@@ -19,6 +20,13 @@ class Cache {
         }
     }
 
+    public async updateGuildCache(guildID: Snowflake) {
+        const DBGuild = await Prisma.client.guild.findFirst({ where:{id: guildID} });
+        
+        if(DBGuild === null) return;
+        this.setGuildData(guildID, DBGuild);
+    }
+
     public setGuildData(id: string, data: Object): void {
         this.cache.Guilds[id] = data;
     }