feat: add parameter to changelog generation to identify incremental generation run

Author: dornech

commitizen/commands/changelog.py

@@ -245,6 +245,7 @@ def __call__(self) -> None:
             tree,
             self.cz.template_loader,
             self.template,
+            incremental=self.incremental
             **{
                 **self.cz.template_extras,
                 **self.config.settings["extras"],