use turbo convention

packages/zitadel-client/turbo.json

@@ -0,0 +1,12 @@
+{
+  "extends": ["//"],
+  "tasks": {
+    "build": {
+      "outputs": ["dist/**"],
+      "dependsOn": ["@zitadel/proto#generate"]
+    },
+    "build:client:standalone": {
+      "outputs": ["dist/**"]
+    }
+  }
+}