feat(Examples): Add Dual Core Sync examples for MAX32690

[sihyung-maxim]

Description

This PR adds the Dual_Core_Sync examples for the MAX32690 (similar to the MAX32655).

Checklist Before Requesting Review

• [ ] PR Title follows correct guidelines.
• [ ] Description of changes and all other relevant information.
• [ ] (Optional) Link any related GitHub issues using a keyword
• [ ] (Optional) Provide info on any relevant functional testing/validation. For API changes or significant features, this is not optional.