feat: type alias for field

[hanakannzashi]

Decorator name field maybe not specific enough, I think we can add a type alias for field named borsh that specifically refers to borsh serialization

[marcus-pousette]

Thanks for the PR

The reason why I the decorator is named field is because we also have another one called variant. In the future there might be a wildcard one, like auto. the decorator name should describe its purpose.borsh, might indicate the origin of the decorator, but not its purpose.

What if you would just do a named import ?

import { field as borsh } from '@dao-xyz/borsh'