This fixes some warnings in my PHPStorm, gets rid
of duplicate code, inlines constants that do not
make the code easier to read, and more.
Change-Id: I02f446491509043f5d3e51e26e932f76c9ecb6cf
This change implements all components to use the datatype 'Math' in Wikidata.
Because 'String 'is used as value type, only the Formatter and Validator are needed to be implemended.
The components are:
* hooks
* Formatter class
* Validator class
* Test cases
Bug: T67397
Change-Id: Ic64fd6c8560f48052e2db24ae1f013d48a82b5e9