Protect rascal commands only intended for code-lenses from regular user invocation.

[djswagerman]

The option “Start Rascal Terminal and import this module”, gives the error “Command 'Start Rascal Terminal and Import this module' resulted in an error (command 'rascalmpl.importMain' not found)”.

Steps to reproduce the behavior:

1. Open empty folder
2. Create folder src/demo
3. Create file 'hello.rsc' in this folder with the following content:
   module demo::basic::Hello
   import IO;

void hello() {
println("Hello world, this is my second Rascal program!");
}
4. Type CMD+SHIFT+P and choose option "Start Rascal Terminal and import this module"

This create the error

Expected behavior
A rascal terminal should be opened with the module module demo::basic::Hello imported and ready to use.

Screenshots

Stack traces
Toggle developer option did not result in any additional information.

Desktop (please complete the following information):

• Visual Studio code Version: 1.74.2
• Rascal plugin version v0.6.0
• Mac Ventura
• Apple M1 Max
• JDK Temurin 11

Additional context
Add any other context about the problem here.

[DavyLandman]

This command should not be run via cmd+shift+p. We should detect this happening and give a better message. Normally you should see a small code-lens pop-up above the main method. As follows:

Clicking any of these is the desired interaction of this command.

[DavyLandman]

@yami2200 fixed this in #279