Make caller arguments take Into<b256> instead of b256

[IGI-111]

Related Component

compiler

Problem you are trying to solve

Manipulating assets in call options require unnecessary invocations of into:

let caller = abi(Transfer, delegate.into());
caller.test_transfers {
    coins: recipients.len(),
    asset_id: AssetId::base().into(),
}(recipients);

Solution you'd like

If asset_id and contract_id took an Into<b256> this could just be:

let caller = abi(Transfer, delegate);
caller.test_transfers {
    coins: recipients.len(),
    asset_id: AssetId::base(),
}(recipients);

Notes

No response