Explicitly enable/disable multi-root in devfiles of che-devfile-registry

[sunix]

Is your task related to a problem? Please describe.

Currently multiroot is disabled by default. this is a new feature. Could be enabled in devfile with:

attributes:
 multiRoot: 'on'

Multiroot may be activated by default in the next weeks.
Some devfile may not work yet.

Describe the solution you'd like

The idea of this issue is to explicitly enable or disable multi-root in devfiles of the che-devfile-registry. Enabled if no problem. Disabled if any problem.

[sunix]

So far:

• Quarkus Rest API devfile is broken with multiroot: didact.md is referencing a file to open concidering the project root is /projects. Will be fixed with the upcomming PR
• Golang devfile is broken with multiroot: no code completion.
  • short term: Will turn off multiroot for this devfile.
  • midterm: Would need to investigate what is the proper layout that works with che and multiroot.

[benoitf]

for golang it's quite disappointing as multi-root workspace should fix imports from the project !

[azatsarynnyy]

Doesn't it require enabling go modules in multi-root mode?

[sunix]

no idea ... I am a Golang newbie

[sunix]

Not related to multi-root: the Java Spring Boot devfile maven build is failing (killed). I tried increasing the memoryLimit to 1G and it works.
Edit: created #19456

[sunix]

Not related to multi-root: the python stack does not have code completion....

[sunix]

same for python django: no code completion
Also the preview is not working. Maybe CORS (it works in its own window)

Edit: code completion works after refreshing the browser (with and without multiroot)
created for the preview issue: #19459

[sunix]

Closing as it has been covered with eclipse-che/che-devfile-registry#359