feat: Add flutter integration driver commands and tests - #1022

Could you add tests in unit test as possible instead of functional test?
https://github.com/appium/python-client/tree/master/test/unit

As a client, what http request should be sent is important but it does not need to test driver side. Driver's response can be a mock.

Existing functional tests include tests for appium project's drivers themselves. They would be removed as not necessary for client tests.

Could you use flutter_intergation namespace or flutter/flutter_integration?

I left some comments.

• convert tests to unit test to focus on each client method's input/output (fast and less flakiness as client)
  • Existing unit test should help to see how to check the http request's input/output as a client
• name space
• some code improvement

Thank you for the contribution, btw :)

Could you use flutter_intergation namespace or flutter/flutter_integration?

updated

@KazuCocoa @mykola-mokhnach Thank you very much for your review. I have addressed all the comments and added both unit tests and end-to-end tests. I'm happy to report that all tests have passed.

The three methods provided in the diagram do not use the flutter integration driver commands feature, is there any other recommended method to install?

update
I successfully installed it by replacing the .py files

It is not released yet. I'll release this tonight. (for via pypi)

4.2.0 is available now