accept discord token as env

we only really need that to function anyway, other things like jellyfin will
just not do anything and we have default value for avatar reset.

index.js

@@ -1,4 +1,14 @@
-const config = require('./config.json');
+let config = {};
+try {
+    config = require('./config.json');
+} catch {
+    if (process.env.DISCORD && process.env.DISCORD != "TOKEN_HERE") {
+        config.token = process.env.DISCORD;
+    } else {
+        console.error("FATAL: Discord token required. Either pass it as an environment variable \"DISCORD\", or fill out config.json.default.");
+        process.exit(1);
+    }
+}
 // the basic discord setup stuff yoinked from their guide
 const { Client, Events, GatewayIntentBits, Partials, ActivityType, MessageFlags, Collection } = require('discord.js');
 const client = new Client({