Filter out run and debug contextual menu when the file doesn't contain a Main

[apupier]

Run and debug contextual menu are available on files that cannot be run or debug. it would be better to not provide the menu. it will allow having a lighter contextual menu, do nto give false hope to end-users and avoid an error notifications when clicking on it

Environment

• Operating System:
• JDK version:
• Visual Studio Code version:
• Java extension version:
• Java Debugger extension version:

Steps To Reproduce

1. create a java file which does not contain a Main class
2. right-click on it

[attach a sample project reproducing the error] attach logs

Current Result

Expected Result

Additional Informations