Bug: Consumer Group association (group_id) unrecognized by lint and missing in dump (APISIX v3.13.0)

Current Behavior

When using ADC v0.24.2 with Apache APISIX v3.13.0, the tool fails to recognize or preserve the association between a Consumer and a Consumer Group. Even though the Admin API successfully handles the group_id field via curl, ADC identifies it as an "Unrecognized key" during linting and omits it entirely during a dump operation.

adc dump ignores Consumer Groups as well , which is defined in readme.md

Exxpected Behavior

ADC should support the group_id (or equivalent alias) for Consumers in the Open Source backend schema to match APISIX v3.x capabilities.

Steps to Reproduce

curl -X PUT http://127.0.0.1
-H "X-API-KEY: "
-d '{
"username": test1",
"group_id": "test_group"
}

2.Run adc dump -o dump.yaml.

3.Observe that the resulting dump.yaml contains the consumer but is missing the group_id or group field.

4.Try to lint a manual YAML file containing:
yaml
consumers:

• username: "test1"
  group_id: "test_group"

Environment

Environment:
ADC Version: 0.24.2
APISIX Version: 3.13.0 (Open Source)
OS-Version: Rhel8.10

Start by tracing the adc lint and dump commands for the Open Source backend schema, then compare their handling with the consumer and Consumer Group definitions described in readme.md. Reproduce the issue with the provided group_id YAML and dump.yaml workflow; done means lint accepts the association and adc dump preserves it.