feat(www): introduce monorepo

This change brings Turborepo monorepo to independently handle the marketing website, the docs website and any other future use cases for mutli-platform support. They are using internal @katanemo package handlers for the design system and logic.

turbo.json

@@ -0,0 +1,27 @@
+{
+  "$schema": "https://turbo.build/schema.json",
+  "globalDependencies": ["**/.env.*local"],
+  "tasks": {
+    "build": {
+      "dependsOn": ["^build"],
+      "outputs": [".next/**", "!.next/cache/**", "dist/**"]
+    },
+    "dev": {
+      "cache": false,
+      "persistent": true
+    },
+    "lint": {
+      "dependsOn": ["^lint"]
+    },
+    "typecheck": {
+      "dependsOn": ["^typecheck"]
+    },
+    "format": {
+      "cache": false
+    },
+    "clean": {
+      "cache": false
+    }
+  }
+}
+