Add vRDT extension as workspace recommended extension

[VenelinBakalov]

Description

Add workspace recommendations for vRDT extension in suitable places. Such location could be the different archetypes since those are used to boostrap new projects.

Alternatives

Additional Context

• Workspace recommendations: https://code.visualstudio.com/docs/configure/extensions/extension-marketplace#_workspace-recommended-extensions
• vRDT repository: https://github.com/vmware/vrealize-developer-tools