fhir-toolbox-go integration

[lschmierer]

Hi @brianpos,
I will give a community talk on our open-source project https://github.com/DAMEDIC/fhir-toolbox-go at the DevDays.

This PR compiles our Go FHIRPath evaluation engine to WASM and adds it as another backend to the Tester.

I am not quite sure how to integrate this into the build process. I see two options:

• Compile the Go code during build (requires the Go compiler)
  (could be optional that it builds without fhir-toolbox-go support if no Go compiler is available)
• just check the compilestatic/fhir-toolbox-go.wasm into the Git repo

What do you prefer?

Edit: I just integrated the build with the Nuxt build system (using a hook)

[brianpos]

Will you be at DevDays in Amsterdam?
If so reach out on the fhir chat Zulip and we can plan a catchup to discuss this PR and best way forward.