Function sync_balance 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn sync_balance(
    descriptor: *const c_char,
    node_address: *const c_char,
) -> *mut c_char

Syncs to a remote node and fetches balance of a descriptor wallet.

• OUTPUT

WalletBalance {
  balance: u64
}

Safety

• This function is unsafe because it dereferences and a returns raw pointer.
• ENSURE that result is passed into cstring_free(ptr: *mut c_char) after use.