feat: add description of activity and terminate commands (joe#122)

Description

feat: add description of enterprise edition commands to display a Joe's activity and terminate processes

Related issue

joe#122 (closed)

Examples

Checklist

• the MR description has been reviewed
• this MR contains text changes and they have been reviewed OR there are no texts changes
• this MR contains GUI/CLI changes and they have been reviewed OR there are no GUI/CLI changes
• this MR contains API changes and they have been reviewed OR there are no API changes