feat(add prompts): add prompt support to tool groups

[galagaevdc]

Added prompt support for tool group.

New Functionality Verified

1. Tool Group Prompt Support

• Groups support included_prompts and excluded_prompts fields
• Prompts from included_servers are automatically included
• Exclusions override inclusions
• Prompts properly partitioned by transport type (SSE vs normal)

2. CLI get group Enhancement

• Displays "Included Prompts" section
• Displays "Excluded Prompts" section
• Note mentions both tools AND prompts

3. CLI update group Enhancement

• Reports "Prompts added to excluded_prompts"
• Reports "Prompts removed from excluded_prompts"
• Reports "Prompts added to included_prompts"
• Reports "Prompts removed from included_prompts"

4. Prompt Callbacks

• Disabling a prompt removes it from all groups' MCP servers
• Enabling a prompt adds it back to relevant groups

5. HTTP Endpoints

• Create/update/delete tool group