[ADD] Hot/Live Reload

Signed-off-by: nar20 <nar20@inf.ufpr.br>

package.json

 {
   "name": "hono-backend",
   "scripts": {
-    "dev": "bun run --watch src/index.ts",
+    "dev": "bun run --hot --watch src/index.ts",
     "db:generate": "drizzle-kit generate",
     "db:migrate": "cross-env DB_MIGRATING=true bun run src/db/migrate.ts",
     "db:seed": "cross-env DB_SEEDING=true bun run src/db/seed.ts",