🎉 Sources Appstore Singer: refactor to use the cdk

[vitaliizazmic]

What

Sources Appstore Singer to use the CDK

Closes #7652

How

This task is part of issue #6164 and #7244.

The Source Appstore Singer significantly relies on dead CDK code. So import BaseSource from base_python were replaced by import from deprecated package of the CDK. Gradle file, setup.py, Dockerfile, requirements.txt were updated. main_dev.py was renamed to main.py, updated, and added to .dockerignore.
SAT wasn't set up for the connector because packages versions conflicting error in dependencies appeared while installing source-acceptance-test package. Separated issue was created airbytehq/airbyte-internal-issues#319. Also test credentials is required.
.

Community member or Airbyter

• Grant edit access to maintainers (instructions)
• Secrets in the connector's spec are annotated with airbyte_secret
• Unit & integration tests added and passing. Community members, please provide proof of success locally e.g: screenshot or copy-paste unit, integration, and acceptance test output. To run acceptance tests for a Python connector, follow instructions in the README. For java connectors run ./gradlew :airbyte-integrations:connectors:<name>:integrationTest.
• Code reviews completed
• Documentation updated
  • Connector's README.md
  • Connector's bootstrap.md. See description and examples
  • Changelog updated in docs/integrations/<source or destination>/<name>.md including changelog. See changelog example
• PR name follows PR naming conventions
• Connector version bumped like described here

[keu]

please add SAT integration

[keu]

SAT

[vitaliizazmic]

/test connector=source-appstore-singer

🕑 source-appstore-singer https://github.com/airbytehq/airbyte/actions/runs/1556346352
❌ source-appstore-singer https://github.com/airbytehq/airbyte/actions/runs/1556346352
🐛 https://gradle.com/s/wbyn4ndasv54a

[vitaliizazmic]

/test connector=source-appstore-singer

🕑 source-appstore-singer https://github.com/airbytehq/airbyte/actions/runs/1556436631
❌ source-appstore-singer https://github.com/airbytehq/airbyte/actions/runs/1556436631
🐛 https://gradle.com/s/bqvsqdijz6ceu

[vitaliizazmic]

/test connector=source-appstore-singer

🕑 source-appstore-singer https://github.com/airbytehq/airbyte/actions/runs/1556475711
✅ source-appstore-singer https://github.com/airbytehq/airbyte/actions/runs/1556475711
No Python unittests run

[vitaliizazmic]

/publish connector=connectors/source-appstore-singer

🕑 connectors/source-appstore-singer https://github.com/airbytehq/airbyte/actions/runs/1556492940
✅ connectors/source-appstore-singer https://github.com/airbytehq/airbyte/actions/runs/1556492940