If and while controllers: add UI for common patters like variable (equal, not equal, greater, less, ...) value

### Use case

Currently, the UI for if controller is hard to use, and it requires resorting to jexl or javascript even for trivial checks.

### Possible solution

Add UI that would contain 3 fields: variable name, operation (==, !=, <, >, starts with, ends with, matches regex) , operand

Then IF and WHILE controllers would be more accessible, and JMeter would be able to use optimized implementation (e.g. it would be able to compile the regex once per testplan)

### Possible workarounds

_No response_

### JMeter Version

5.5

### Java Version

_No response_

### OS Version

_No response_