Added a build process

package.json

@@ -4,24 +4,24 @@
   "private": true,
   "author": "Anatoly Kopyl <akopyl@radner.ru>",
   "license": "GPL-3.0",
+  "main": "bundle/vue-three-d-mockup.esm.js",
+  "browser": {
+    "./sfc": "src/Mockup.vue"
+  },
   "scripts": {
     "serve": "vue-cli-service serve",
     "build": "vue-cli-service build",
-    "build-bundle": "vue-cli-service build --target lib --name vue-three-d-mockup ./src/index.js",
+    "build-bundle": "rollup -c",
     "lint": "vue-cli-service lint"
   },
-  "files": [
-    "dist/*",
-    "src/*",
-    "*.json",
-    "*.js"
-  ],
   "dependencies": {
     "core-js": "^3.6.5",
     "three": "^0.137.5",
     "vue": "^3.0.0"
   },
   "devDependencies": {
+    "@rollup/plugin-commonjs": "^21.0.1",
+    "@rollup/plugin-url": "^6.1.0",
     "@vue/cli-plugin-babel": "~4.5.0",
     "@vue/cli-plugin-eslint": "~4.5.0",
     "@vue/cli-service": "~4.5.0",
@@ -31,6 +31,7 @@
     "eslint": "^6.7.2",
     "eslint-plugin-import": "^2.20.2",
     "eslint-plugin-vue": "^7.0.0",
-    "file-loader": "^6.2.0"
+    "file-loader": "^6.2.0",
+    "rollup-plugin-vue": "^6.0.0"
   }
 }