chore: Tailwind setup & configuration (#65)

* Add tailwind config and update webpack config

* Add colors variables

* Add popup variables

* Move PostCSS config to webpack config

package.json

@@ -67,6 +67,7 @@
     "@types/zip-webpack-plugin": "^3.0.4",
     "@typescript-eslint/eslint-plugin": "^6.5.0",
     "@typescript-eslint/parser": "^6.5.0",
+    "autoprefixer": "^10.4.16",
     "concurrently": "^8.2.2",
     "eslint": "^8.48.0",
     "eslint-config-airbnb": "^19.0.4",
@@ -89,7 +90,10 @@
     "jest-transform-stub": "^2.0.0",
     "koa": "^2.14.2",
     "koa-bodyparser": "^4.4.1",
+    "postcss": "^8.4.32",
+    "postcss-loader": "^7.3.3",
     "prettier": "^3.0.3",
+    "tailwindcss": "^3.4.0",
     "ts-loader": "^9.4.4",
     "ts-node": "^10.9.2",
     "tsx": "^4.6.2",