add bun backend and add upload bitstream component

package.json

@@ -3,12 +3,14 @@
   "version": "0.0.0",
   "private": true,
   "type": "module",
+  "main": "./server/index.ts",
   "scripts": {
     "dev": "bunx --bun vite",
     "build": "run-p type-check \"build-only {@}\" --",
     "preview": "bunx --bun vite preview",
     "build-only": "bunx --bun vite build",
-    "type-check": "bunx --bun vue-tsc --build"
+    "type-check": "bunx --bun vue-tsc --build",
+    "server": "bun run ./server/index.ts"
   },
   "dependencies": {
     "log-symbols": "^7.0.0",
@@ -20,6 +22,7 @@
   "devDependencies": {
     "@tailwindcss/postcss": "^4.0.12",
     "@tsconfig/node22": "^22.0.0",
+    "@types/bun": "^1.2.5",
     "@types/node": "^22.13.4",
     "@vitejs/plugin-vue": "^5.2.1",
     "@vitejs/plugin-vue-jsx": "^4.1.1",