feat(阶段1): 搬入 ojnext 为 apps/web，未改业务代码

apps/web/src/env.d.ts

@@ -0,0 +1,16 @@
+/// <reference types="vite/client" />
+
+interface ImportMetaEnv {
+  readonly PUBLIC_ENV: string
+  readonly PUBLIC_MAXKB_URL: string
+  readonly PUBLIC_OJ_URL: string
+  readonly PUBLIC_CODE_URL: string
+  readonly PUBLIC_JUDGE0_URL: string
+  readonly PUBLIC_ICONIFY_URL: string
+  readonly PUBLIC_SIGNALING_URL: string
+  readonly PUBLIC_WS_URL: string
+}
+
+interface ImportMeta {
+  readonly env: ImportMetaEnv
+}