The support of Camel LSP for Eclipse Theia is in progress. It will allow to have it also with Che 7.
The idea is to rely on Camel VS Code extension.
Follow instructions here
In this case, it might be more straightforward to use the "Deploy plugin by ID" command with a Dockerized Theia.
Start theia-full as indicated here:
docker run -it -p 3000:3000 -v "$(pwd):/home/project:cached" theiaide/theia-full:next
Go to http://localhost:3000
Activate Command palette, (View -> Find command...) and use Plugin: Deploy plugin by Id
Provide vscode:extension/camel-tooling.vscode-apache-camel