readme: git clone with submodules

Following up on tantaman#398 and @markus .. just a missing git clone with-submodules flag. in my machine, everything else worked like a charm 🥳 (auth0 ✔ hot reload ✔ ... ✔️)

README.md

@@ -9,7 +9,7 @@ The re-write currently requires bleeding edge builds of `cr-sqlite` and refers t
 Clone & Install
 
 ```bash
-git clone [email protected]:tantaman/strut.git
+git clone --recurse-submodules [email protected]:tantaman/strut.git
 cd strut
 pnpm install
 pnpm build