listTemplates returns the current content and status of a page of templates.
Example
Inputs
limit defaults to 50 (maximum 1,000), offset to 0, and sort to desc.
templateStatus filters active (true) or inactive (false) templates;
editorType: "richTextEditor" restricts editor type. account selects the
Brevo binding.
Output
Returns{ count: number; templates: Template[] }. Each template includes
numeric id, name, subject, htmlContent, isActive, timestamps, sender
email and optional ID/name, plus optional replyTo, tag, testSent, and
toField. count is the provider’s matching total; use offset to page.