Feature Request: MEF load based on launch command

**Visual Studio Version**: 16.9

**Summary**:
Please add the ability to Load MEF components based on the use of a launch command instead of just Project Capabilities.

**User Impact**:
Currently a MEF export to support a launch profile can only be loaded based on the project capabilities that could use it, requiring the component to be loaded to determine if it is needed.

Two examples of extensions that only add debugging support and could use this enhancement are: [.NET Core Debugging with WSL 2](https://marketplace.visualstudio.com/items?itemName=ms-azuretools.Dot-Net-Core-Debugging-With-Wsl2) and [Bridge to Kubernetes](https://marketplace.visualstudio.com/items?itemName=ms-azuretools.mindaro).