build: replace theme-specific NPM scripts with paragon CLI (#1447)

Author: adamstankiewicz

package.json

@@ -9,19 +9,18 @@
   "scripts": {
     "build": "fedx-scripts webpack",
     "i18n_extract": "fedx-scripts formatjs extract --throws",
-    "build:with-theme": "THEME=npm:@edx/brand-edx.org@latest npm run install-theme && fedx-scripts webpack",
+    "build:with-theme": "paragon install-theme && fedx-scripts webpack && npm install",
     "check-types": "tsc --noemit",
     "eslint": "fedx-scripts eslint --ext .js --ext .jsx --ext .ts --ext .tsx .",
     "lint": "npm run eslint && npm run check-types",
     "lint:fix": "npm run eslint -- --fix",
     "precommit": "npm run lint",
     "prepublishOnly": "npm run build",
     "postinstall": "patch-package",
-    "install-theme": "npm install \"@edx/brand@${THEME}\" --no-save",
     "start": "fedx-scripts webpack-dev-server --progress",
     "start:stage": "npm run start -- --config=webpack.dev-stage.config.js",
-    "start:with-theme": "THEME=npm:@edx/brand-edx.org@latest npm run install-theme && npm run start",
-    "start:stage:with-theme": "THEME=npm:@edx/brand-edx.org@latest npm run install-theme && npm run start:stage",
+    "start:with-theme": "paragon install-theme && npm run start && npm install",
+    "start:stage:with-theme": "paragon install-theme && npm run start:stage && npm install",
     "debug-test": "node --inspect-brk node_modules/.bin/jest --runInBand --coverage",
     "test": "TZ=UTC fedx-scripts jest --coverage --passWithNoTests --maxWorkers=50%",
     "test:watch": "npm run test -- --watch",