introduce validation for Value/*Collection

[shrink0r]

At the moment the TextCollection and NumberCollection values don't use specific validation rules. They still implement the validation and sanitization within the IValue::set method. This way of handling values being set is deprecated and should be replaced by adequate IRule implementations.
We either need a TextCollectionRule and a NumberCollectionRule, or refactor the existing Text- and NumberRule to support validating arrays.

@see https://github.com/berlinonline/Dat0r/blob/field_path/src/Dat0r/Runtime/Attribute/Value/Type/TextCollectionValue.php#L55