feat: introduce "explain selected code" command for GitLab Duo Chat
Summary
The command can be used to ask GitLab Duo to explain selected code. This MR includes !917 (merged)
How to work with the chat
- Run VSCode with the extension loaded.
- Enable
chatfeature flag - Select any text in the editor. Right click + select
GitLab Duo: Explain Selected Codecommand. - Chat window should open. wait for response.
