Updated Bricks remote templates and maintenance behavior

Property	Value
description	Wired remote template sources and finalized the starter maintenance setup.

• Added the MAC remote template source at https://bricks-patterns.circea.dev.
• Added the Frames remote template source at https://bricks.getframes.io.
• Added the Maven remote template source at https://acss.bricksmaven.com.
• Stored the remote template credentials or passwords with secrets redacted.
• Assigned the dedicated Maintenance template as the Bricks maintenance template.
• Set maintenance bypass mode to custom roles.
• Excluded the auth pages from maintenance mode so Log In, Forgot Password, and Reset Password remain reachable.