activated sourcemap in prod build, activated sentry sourcemap upload to glitchtip

package.json

@@ -40,6 +40,7 @@
     "@babel/plugin-syntax-dynamic-import": "^7.8.3",
     "@babel/preset-env": "^7.12.7",
     "@kazupon/vue-i18n-loader": "^0.5.0",
+    "@sentry/webpack-plugin": "^3.2.2",
     "@vue/test-utils": "^1.1.1",
     "babel-core": "^7.0.0-bridge.0",
     "babel-eslint": "^10.1.0",
@@ -50,6 +51,7 @@
     "compression-webpack-plugin": "^8.0.0",
     "copy-webpack-plugin": "^6.3.2",
     "css-loader": "^5.0.1",
+    "dotenv": "^16.4.7",
     "eslint": "^7.14.0",
     "eslint-config-prettier": "^6.15.0",
     "eslint-config-standard": "^16.0.2",