Add support to @PropertyName

[ismaelgomescosta]

Create a member level PropertyName to customize the property name of change

[bartoszwalacik]

This feature looks like really easy to implement, perfect issue for a contribution

[bartoszwalacik]

new ann should be added here org.javers.core.metamodel.annotation.PropertyName Target METHOD & FIELD

New field, String name, should be added to Property class.
By default, name should be initialized from member.propertyName() (as is now).

When @PropertyName is present, name should be set from ann value.

This logic, should be implemented in BeanBasedPropertyScanner and FieldBasedPropertyScanner

Tests should be added in PropertyScannerTest

[bartoszwalacik]

@PropertyName added in javers 3.1.0
see http://javers.org/documentation/domain-configuration/#supported-annotations