Draft: feat(workspace): Added the workspaces and workspace list command

Description

Add the ability to list, view, modify and create workspaces from the glab CLI.

The following commands have been added

glab workspace list --group=gitlab-org 
glab workspace create --group=gitlab-org --agent=1 -f devfile.yaml --editor=ttyd
glab workspace view --group=gitlab-org 1

Demo

Related Issues

Resolves https://gitlab.com/gitlab-org/gitlab/-/issues/390055 Resolves #1219

How has this been tested?

Tested using the following commands glab workspace list -g "gitlab-org"

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation
• Chore (Related to CI or Packaging to platforms)