Open workspace with multiple IDEs

[loujaybee]

There are some cases where users have asked for multiple IDEs for the same workspace.

It's possible to do:

1. VS Code Browser + JetBrains Desktop
   b. Via Gitpod open page if VS Code Desktop is default setting
2. VS Code Browser + VS Code Desktop
   a. Via command palette if VS Code Browser is default user setting
   b. Via Gitpod open page if VS Code Desktop is default setting

It is not possible to do:

1. More than 1 JetBrains Desktop IDE

Options from a user-perspective of multi-ide workspaces are not super clear right now.

This issue is to look into ways that we can:

1. Make multi-ide workspaces more clear
2. Think about how we enable multi-ide workspaces in future

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.