🧑‍💻 Improve env variables type safety and management (#718)

Closes #679

packages/env/package.json

@@ -0,0 +1,20 @@
+{
+  "name": "@typebot.io/env",
+  "version": "1.0.0",
+  "license": "AGPL-3.0-or-later",
+  "private": true,
+  "main": "./env.ts",
+  "types": "./env.ts",
+  "dependencies": {
+    "@t3-oss/env-nextjs": "^0.6.0",
+    "zod": "3.21.4"
+  },
+  "devDependencies": {
+    "@typebot.io/tsconfig": "workspace:*",
+    "@types/node": "^20.4.9",
+    "esbuild": "^0.19.1"
+  },
+  "scripts": {
+    "build": "esbuild env.ts --packages=external --outfile=dist/env.mjs"
+  }
+}