build(demo): setup ts paths to work without root dist

Author: MichaelGitArt

demo/tsconfig.json

@@ -12,8 +12,8 @@
     "baseUrl": ".",
     "paths": {
       "@/*": ["./src/*"],
-      "plugin": ["../dist/index"],
-      "plugin-css": ["../dist/style.css"]
+      "plugin": ["../src/index"],
+      "plugin-css": ["./src/empty.css"]
     }
   },
   "include": ["src/**/*.ts", "src/**/*.d.ts", "src/**/*.tsx", "src/**/*.vue"]