-------------------
Add a shortcut to merge queries, mutations. E.g.:
python
import strawberry
from strawberry.tools import merge_types
strawberry.type
class QueryA: ...
strawberry.type
class QueryB: ...
ComboQuery = merge_types("ComboQuery", (QueryB, QueryA))
schema = strawberry.Schema(query=ComboQuery)
Contributed by [Alexandru Mărășteanu](https://github.com/alexei) [PR #1273](https://github.com/strawberry-graphql/strawberry/pull/1273/)