Revise the Validation() method of the Option interface

[AleksandarSavchev]

What would you like to be added:
Currently there are places for improving the Validation() method of the Option interface in the pkg/shared/ruleset/disak8sstig/option package

diki/pkg/shared/ruleset/disak8sstig/option/options.go

Lines 15 to 19 in db51f28

	// Option that can be validated in order to ensure
	// that configurations are correctly defined
	type Option interface {
	Validate() field.ErrorList
	}

1. Most implementations of Option add field.Path to the errors returned from Validate(). ex:
   

   diki/pkg/shared/ruleset/disak8sstig/option/options.go

   Lines 116 to 120 in db51f28

   	func (o Options242415) Validate() field.ErrorList {
   	var (
   	allErrs field.ErrorList
   	rootPath = field.NewPath("acceptedPods")
   	)

   
   We should allow field.Path to be passed to the Validate() method to have a better description of which options are not valid.

2. Currently Validate() returns field.ErrorList. We should look into weather it is better to return an error which contains all other errors merged with errors.Join()

Why is this needed:
Enhance user options validation experience.