Network Intent validation against allowed value list with ranges

Network Intent checks currently do not support validating whether a given input value, such as a VLAN ID, falls within an allowed list that combines individual values and ranges (for example, 1-5,7,9-12,13,28,128). Users must rely on manual or basic comparison operators that cannot express range-based membership. This enhancement would add a check type that accepts a mixed list of discrete values and ranges, and evaluates whether the input value is present within that defined set. Customers performing compliance or configuration validation would be able to define allowed value sets efficiently and receive accurate pass/fail results without building complex workarounds.