Add Clerk access review driver

Wire Clerk in as a supported connector provider for access\nreviews and expose it through the console GraphQL provider enum.\n\nAdd a dedicated Clerk driver that lists users from the Clerk\nBackend API, maps account state and authentication signals into\nAccountRecord fields, and covers the behavior with focused driver\nand provider tests.\n\nInclude a migration that appends CLERK to the connector_provider\nenum so environments can persist Clerk connectors safely.

Signed-off-by: Cursor Agent <cursoragent@cursor.com>

Co-authored-by: Bryan FRIMIN <bryan@frimin.fr>
Signed-off-by: Cursor Agent <cursoragent@cursor.com>

pkg/connector/provider/builtin.go

@@ -26,6 +26,7 @@ func NewBuiltinRegistry() *Registry {
 		asanaRegistration(),
 		bitbucketRegistration(),
 		brexRegistration(),
+		clerkRegistration(),
 		clickupRegistration(),
 		cloudflareRegistration(),
 		cursorRegistration(),