fix: correct to build remix.ts (#8)

Author: yusukebe

tsup.config.ts

@@ -1,8 +1,9 @@
 import { defineConfig } from 'tsup'
 
 export default defineConfig({
-  entry: ['src/vite-plugin.ts', 'src/dev.ts', 'src/cloudflare-pages.ts'],
+  entry: ['src/vite-plugin.ts', 'src/dev.ts', 'src/cloudflare-pages.ts', 'src/remix.ts'],
   external: ['../server', 'virtual:remix/server-build', 'hono', '@remix-run/cloudflare', 'vite'],
   format: 'esm',
+  splitting: false,
   dts: true,
 })