Is your feature request related to a problem?
PPL currently lacks MAX and MIN functions for the eval command/a way to find the maximum or minimum value among multiple arguments (fields, constants) within a single row.

What solution would you like?
Add MAX(x, y, ...) and MIN(x, y, ...) functions to PPL's eval command that:

• Accept variable number of arguments
• Support mixed data types (numbers and strings) with behavior:
  • MAX: Prefers strings over numbers when types are mixed
  • MIN: Prefers numbers over strings when types are mixed

Example usage:

• source=logs | eval result = MAX(2, 100, "banana", "apple") | fields result -> result would be "banana"
• source=logs | eval result = MIN(2, 100, "banana", "apple") | fields result -> result would be 2

What alternatives have you considered?
N/A

Do you have any additional context?
Add any other context or screenshots about the feature request here.