Add a velocity helper for the very common use case of a wiki translation macro call with a script parameter

XWIKI-24290 added the possibility to pass directly a script variable to a translation macro, which makes a lot easier to use user input safely:

{{velocity}}
#set ($txparameters = [$userinput, 42])
{{translation key="some.translation" scriptParameters="txparameters"/}}
{{/velocity}}

But it's a very common use case and a Velocity helper could help make these calls more readable and mitigate the risk of using the same variable for two different calls:

{{velocity}}
#wikiTranslation('some.translation',  [$userinput, 42])
{{/velocity}}