feat: custom chatId route support

src/lib/stores/index.ts

@@ -1,4 +1,13 @@
 import { writable } from 'svelte/store';
 
+// Backend
 export const config = writable(undefined);
 export const user = writable(undefined);
+
+// Frontend
+export const db = writable(undefined);
+export const chatId = writable('');
+export const chats = writable([]);
+export const models = writable([]);
+export const settings = writable({});
+export const showSettings = writable(false);