commentlisted

Manage Jira comments using `jirac`. Steps: 1. Check that `jirac` is available by running `jirac --version`. If it is missing, tell the user to install it with `cargo install jira-commands`. 2. Determine whether the user wants to list comments or add a comment. For listing comments: - extract the issue key - run `jirac issue comment list <ISSUE-KEY>` For adding a comment: - extract the issue key - extract the comment body - run `jirac issue comment add <ISSUE-KEY> --body '<COMMENT>'` - if the comment is long or already in a file, use `--file <FILE>` instead 3. Show the result clearly. Examples: - "show comments on PROJ-123" → `jirac issue comment list PROJ-123` - "add a comment to PROJ-123 saying QA verified this" → `jirac issue comment add PROJ-123 --body 'QA verified this'` - "comment on PROJ-456 with the contents of note.md" → `jirac issue comment add PROJ-456 --file note.md`