feat: Output parameter fixed and more parameters added to trigger_get

[universalxtv]

Update Zabbix MCP Server Output Parameter and Trigger Get Method

Changes

Output Parameter Enhancement

• Modified the output parameter type in all get methods from str to Union[str, List[str]]
• This change allows passing either a string (e.g. "extend") or a list of specific fields to return
• Previously, only a single string value was accepted
• Updated all docstrings to reflect this change with the standardized description: "extend" or list of fields to return
• Type hints and param initializations have been updated accordingly

Trigger Get Method Expansion

• Enhanced the trigger_get method with additional parameters:
  • monitored: Filter only monitored items
  • expandDescription: Option to expand macros in descriptions
  • selectHosts: Added ability to select specific host fields
  • selectLastEvent: Added ability to select specific last event fields
  • sortfield: Added sorting capability by specified fields
  • sortorder: Added sort direction control ("ASC" or "DESC")
• These additions align the method with the full capabilities of Zabbix API's trigger.get
• Updated docstring to document all new parameters

Migration Impact

• All existing code using string output parameters will continue to work
• New functionality allows more granular control over returned fields
• No breaking changes - only extending functionality

Testing Considerations

• Existing uses of get methods remain compatible
• New output list format needs testing with various field combinations
• Enhanced trigger_get parameters should be tested with various filter combinations