chore: add custom cursor, add config system

src/lib/userSettings.ts

@@ -0,0 +1,7 @@
+import { writable } from 'svelte/store';
+import { Config } from './config';
+
+export const userSettings = writable<Config>(new Config());
+
+export const customCursor = writable<boolean>(true);
+export const cursorSmoothening = writable<boolean>(true);