[demo] use QuickJs for the JavaScript provider

[andreaTP]

Back from holidays and happy to help!
Since code is worth thousands of words, I attempted a first(demo) integration of QuickJs/Javy to showcase one possible solution to #160 with a compatible API.

A few notes on this first(unpolished) attempt:

• the used Javy version is slightly outdated ( comes from )
• the quoting of strings is primitive and will break with more complex scripts
• we are using StdErr to return the result, which can be sub-optimal

Happy to hear feedback and iterate if this is aligned with the direction of the project!

[andreaTP]

note, the failure of: GlueRelatedResourcesTest.simpleRelatedResourceUsage is caused by incorrect handling of escape sequences.

[csviri]

Ahh wow, thank you! will take a deeper look bit later hopefully end of this week

[andreaTP]

Sounds good, let me know if/how you want to proceed or if you want an exploration in a different direction 🙂