Feature: #58621 - FormatCaseViewHelper

See Issue #58621

Description

Add a format case view helper to change casing of strings.

Possible modes are: * upper Transforms the input string to its uppercase representation * lower Transforms the input string to its lowercase representation * capital Transforms the input string to its first letter upper-cased * uncapital Transforms the input string to its first letter lower-cased

<f:format.case>Some Text with miXed case</f:format.case> renders "SOME TEXT WITH MIXED CASE"

<f:format.case mode="capital">someString</f:format.case> renders "SomeString"

Impact

The new ViewHelper can be used in all new projects. There is no interference with any part of existing code.