Replace graphene with strawberry

[TaiSakuma]

This is to make the code similar to nextline and, eventually, turn ProductDB into plugins of nextline-graphql.

[TaiSakuma]

It is easier to replace if we can import graphene-sqlalchemy and strawberry simultaneously while replacing. However, as of this writing, they require different versions of graphql-core.

strawberry

• strawberry requires graphql-core = "~3.2.0".

graphene-sqlalchemy 2

• ProductDB uses graphene-sqlalchemy 2
• The latest version is 2.3.0
• It requires graphene 2. It doesn't work with graphene 3.
• (Incidentally, it requires SQLAlchemy 1. It doesn't work with SQLAlchemy 2)
• graphene 2 requires graphql-core 2.1 or above and below 3.

graphene-sqlalchemy 3

• It is currently in beta.
• It will work with graphene 3.
• (The latest version (b4) still requires SQLAlchemy below 2).
• graphene 3 will work with graphql-core 3.

graphene-sqlalchemy-filter

• ProductDB uses this package along with graphene-sqlalchemy.
• It requires graphene-sqlalchemy 2 and doesn't work with 3.
• (It doesn't work with SQLAlchemy 2)
• This package is being integrated into graphene-sqlalchemy 3