[ACELL04] Include the Portenta X8 and Nicla Sense ME as part of the CI workflow

[aliphys]

Describe the request

As boards that are included as part of the Arduino ecosystem, the Portenta X8 (fqbn: arduino:mbed_portenta:portenta_x8) and the Nicla Sense ME (fqbn: arduino:mbed_nicla:nicla_sense) and actively supported, they are not part of the CI compilation checks for the examples in this repository.

Including these two as part of the matrix strategy would help follow up with sketch compatibility on these boards (and document/fix as required). Specifically https://github.com/arduino/arduino-examples/issues/63 and https://github.com/arduino/arduino-examples/issues/74 .

Describe the current behavior

The boards included as part of matrix in the compile-examples.yml GitHub Workflow does not include the Portenta X8 or Nicla Sense ME boards.

The examples version

5d991a2

Additional context

No response

Issue checklist

• [X] I searched for previous requests in the issue tracker
• [X] I verified the feature was still missing when using the latest version
• [X] My request contains all necessary details