* chore: modified example for balance AccountStore

* add example for account store balance

* add example for account store balance

* Update frame/balances/src/lib.rs

* Update frame/balances/src/lib.rs

* balance account store example

* balance account store example

* Update frame/balances/src/lib.rs

* Update frame/balances/src/lib.rs

* balance account store example

Co-authored-by: Bastian Köcher <[email protected]>
Co-authored-by: Kian Paimani <[email protected]>