Use Github workflows to compile examples and spell check

[sandeepmistry]

Alternative to PR #31 and #32.

Uses compile-examples action from: https://github.com/arduino-libraries/actions

This will allow us to have a super minimal .yml file in all arduino-libraries repos, and re-use a common action from a central Github repo.

[sandeepmistry]

@facchinm @cmaglie @lxrobotics @mastrolinux @rsora please review this along with https://github.com/arduino-libraries/actions/tree/master/compile-examples (which is based on https://help.github.com/en/articles/creating-a-docker-container-action).

@rsora was in favour of use Node.js instead of Docker + bash for the common Github action in terms of testability, but I think this is good to get us going for now. We can introduce Node.js down the road as needed.

[aentinger]

👍 I like how clean everything is. Doesn't need a rocket scientist to comprehend what's happening. Nice work 😉

[rsora]

Please do not let bash proliferate 😸

Anyway, the action properly hides the boilerplate so 👍 from me.

May I suggest to move the https://github.com/arduino-libraries/actions/tree/master/compile-examples code to https://github.com/arduino/actions?
This way we will have a single consistent point of access for all our actions in the future (good also for us maintainers and users).

[sandeepmistry]

I've added spell check support In: https://github.com/arduino-libraries/actions/tree/master/spell-check (it uses code spell) ... this works and I've fixed some spelling :)

May I suggest to move the https://github.com/arduino-libraries/actions/tree/master/compile-examples code to https://github.com/arduino/actions?

@rsora I think I'm ok with this, we might need to rename the action names to indicate they are for Arduino Libraries only, with we get for free sort of because of arduino-libraries/actions

[rsora]

@rsora I think I'm ok with this, we might need to rename the action names to indicate they are for Arduino Libraries only, with we get for free sort of because of arduino-libraries/actions

@sandeepmistry as per https://help.github.com/en/articles/workflow-syntax-for-github-actions#example-using-a-public-action-in-a-subdirectory we should be able to do something like this
uses: arduino/actions/libraries/compile-examples@master WDYT?

[sandeepmistry]

uses: arduino/actions/libraries/compile-examples@master WDYT?

@rsora excellent suggestion! Stay tuned for a pull request in that repo! #hacktoberfest

[sandeepmistry]

This should be good to go now, I've removed the Travis CI config as well. We need to re-add the badges to the read me once merged.