ci,examples: add a very minimal examples/clicks.v (490 bytes), fix the failing CI jobs

[spytheman]

No description provided.

[mike-ward]

Thanks for fixing the CI.

What's the motivation for the clicks example?

[spytheman]

What's the motivation for the clicks example?

To have the smallest possible example, that is then easy to modify by adding stuff to it, from the snippets shown by the showcase, instead of trimming/deleting code from the bigger existing examples.

[spytheman]

It also shows how to use @[has_globals] and keep the state in a global variable, without using closures etc.

Even thought it is not recommended for more complex applications, in many cases, it is the easiest/fastest approach for prototyping stuff in my experience.