Add Renode-based tests of Arduino examples

[robertszczepanski]

This PR is a solution to #60.

It doesn't affect current CI workflow steps but there are few additional steps. After successfully building vanilla repository examples, CI patches them so that serial will be compatible with Renode platform and examples are built again. Next built binaries are tested in Renode with proper inputs.

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[robertszczepanski]

@googlebot I fixed it.