Che: Provide an xml editor with xsd completion and validation

[apupier]

It would be nice to support an xml editor with xsd completion and validation.

[mickaelistria]

See https://github.com/microclimate-devops/xml-language-server , it seems like a language server now exists for XML. It's used by this vscode extension: https://marketplace.visualstudio.com/items?itemName=IBM.XMLLanguageSupport

[apupier]

Red Hat has provided a client for vs code using a newly written xml language server .
using the Language Servers should provide compatibility with Camel La,nguage Server as-is.

(both language servers are working fine together in VS Code for information)
@fbricon @NikolasKomonen

[apupier]

I think that it was covered with https://github.com/eclipse/che/issues/12437