add: --exclude-default-types and --add-scalar-imports arguments to schema codegen

[volga]

Description

We are testing Golang services that use the library https://github.com/99designs/gqlgen to generate the code. This library also uses a custom scalar Time type, but, unlike the sgqlc library, in it the Time type is a complete representation of the timestamp.

With the current changes, it is proposed to add: --exclude-default-types argument to the client generation utility, which provides the ability to deactivate the use of default types in the generated client; --add-scalar-imports argument to the client generation utility, which provides the ability to import the use of custom scalar types in the generated client.

Pull request checklist

• [x] Tests: This PR includes tests for covering the features or bug fixes (if applicable).
• [x] Docs: This PR updates/creates the necessary documentation.
• [x] CI: Make sure your Pull Request passes all CI checks. If not, clarify the motif behind that and the action plan to solve it (may reference a ticket)

How to test it

use sgqlc-codegen schema -d schema.json --exclude-default-types Time Date DateTimes command with --exclude-default-types argument

Visual reference

with argument in command

class Time(sgqlc.types.Scalar):
    __schema__ = schema

without argument in command

Time = sgqlc.types.datetime.Time

[volga]

Hi, @barbieri ! Could you check this final patch, please? We already need these changes in our work. I am sure that these are useful changes for library users.

[volga]

Ping 😉

[barbieri]

thanks for pinging, will look into it today... I forgot it in a pile of TODO list 😅

[volga]

Sorry! Somehow a commit was added past the hooks. And I still have changes on the local. Now everything is fine - I sent them.

[volga]

Ping 🔔

[volga]

@barbieri Hello! Can you release this patch? We want to use them in our work.

[volga]

Ping 🔔

[volga]

Hello, @barbieri! Thank you! Can you release it?

[barbieri]

done https://pypi.org/project/sgqlc/16.2/