feat: update Dockerfile and workflow for environment variable support

- Modified the Dockerfile to include ARG and ENV for PUBLIC_CONVEX_URL and PUBLIC_CONVEX_SITE_URL, enhancing configuration flexibility.
- Updated the deploy workflow to pass these environment variables during the build process.
- Adjusted package.json to use bun for script commands and added svelte-adapter-bun for improved Svelte integration.

apps/web/svelte.config.js

@@ -1,4 +1,4 @@
-import adapter from "@sveltejs/adapter-auto";
+import adapter from "svelte-adapter-bun"; 
 import { vitePreprocess } from "@sveltejs/vite-plugin-svelte";
 
 /** @type {import('@sveltejs/kit').Config} */