Add Change Case Action to Workflow Builder

Please add a native Change Case action to the Workflow Builder for common text transformations.

Supported options could include:

• lowercase

• UPPERCASE

• Title Case

• Sentence case

• camelCase

• PascalCase

These are common string manipulation requirements that currently require custom implementations, regular expressions, or external services. A single configurable action would simplify workflows while remaining extensible for additional case formats in the future.