[Security] Block certain gp commands when sharing a workspace

Is your feature request related to a problem? Please describe

Sharing a workspace, comes with a huge security flaw, because you also share your git credentials, and secrets stored in your user account.

Describe the behaviour you'd like

When a workspace is shared, the commands gp env (access to user variables) and gp credential-helper (access to git credentials) should be disabled.
That way sharing a workspace with others becomes safe! Users I share the workspace with, can make changes in that specific workspace (that's what I specifically allowed when clicking "Share Workspace"), but they don't have access to my permissions or secrets. They can no longer access my other repos or information that I don't want to share.

Describe alternatives you've considered

My poor man's hack that I use until this feature is officially implemented, a script that removes the credential.helper line from ~/.gitconfig https://github.com/shaal/DrupalPod/pull/46/files#diff-6ed300724c7e75fd4724d06dd9f6d386c13c69e35037f3807aea78811235bafaR6

Additional context

Start by locating the implementations of the gp env and gp credential-helper commands, then trace how workspace sharing is represented. Done means both commands are unavailable in a shared workspace while remaining available in an unshared workspace; the payload names no specific files or tests.