Replace get devs

[jaenrig-ifx]

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In devs.py:

• Added serial_number attribute to DevAccessSerial class. It will match the uid of the Device class. But allows direct handling of serial ports.
  This for example will be useful when locally testing devices, and we don´t have or want to create a device yaml. We just have 2 devices connected, and these will be used for testing.
• To support that the scan() function is added to DevAccessSerial. See how this is used in devs_query.main_devs_query_cli().

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• Added devs_query.py to enable simple command line queries of connected devices, either provided explicitly in a .yml file, or just by scanning the available serial devices. This is currently used by the micropython make deploy_multi target, which can be both used locally (during development) and it is as well used in CI to flash in the same jobs, the same type of boards. See Replace get devs micropython#239

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• run_test_plan.py now handles devices rather than just serial ports. And keep the serial port and switchable capabilities abstracted until required for communication and switching the devices.

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• uhubctl.py will not raise any exception is not available. In that case a device won´t have switching capabilities. This should enable a transparent management of the devices of uhubctl, or in future, any underlying reset/power-switch or comparable hardware/software mechanism.

The devs** will eventually moved out of this repository, as this is independent of micropython. The run_test_plan.py uses devs.py. But devs**.py and uhubctl.py` does not need to know anything about micropython ecosystem (and it should remain like this is to extend this utility to arduino or any future ecosystem).

[LinjingZhang]

👍

[NikhitaR-IFX]

What is query_deep providing differently? Maybe I could also run the test and see :)

[jaenrig-ifx]

Normal query will search for valid type (str, int) attributes of the first level object (Device object). And "Deep" query will also consider the attributes of "attribute objects". So in this case, it will make queryable the attributes of DevSwitch and DevAccessSerial.

So, without "deep" -> you could only query "name, uid", with deeps, you can also query "access, serial_number" and "hub, port".

But that I did not make it CLI configurable. The CLI is set to deep_query.