Attribute constructor
Example
Attribute(modifiers: 'final', type: 'String?', name: 'name'),
Attribute(modifiers: 'final', type: 'String?', name: 'surname', value: "'Star'")
Output
: final String? name;
Output
: final String? surname = 'Star';
Implementation
Attribute({
required this.name,
required this.type,
this.modifiers,
this.value
});