Add 'Templates' Button to Screen Builder Navigation Menu

[sanjacornelius]

Issue & Reproduction Steps

This PR adds a 'Templates' button to the navigation menu within the screen builder. It updates the existing options array in screen.vue to accommodate the new button.

Changes:

• Updated the options array in screen.vue to include a new 'Templates' button in the screen builder navigation menu.

How to Test

1. Navigate to the screen builder in the application.
2. Ensure the 'Templates' button is now present in the screen builder navigation menu.

Related Tickets & Packages

FOUR-18284

ci:next

Code Review Checklist

• I have pulled this code locally and tested it on my instance, along with any associated packages.
• This code adheres to ProcessMaker Coding Guidelines.
• This code includes a unit test or an E2E test that tests its functionality, or is covered by an existing test.
• This solution fixes the bug reported in the original ticket.
• This solution does not alter the expected output of a component in a way that would break existing Processes.
• This solution does not implement any breaking changes that would invalidate documentation or cause existing Processes to fail.
• This solution has been tested with enterprise packages that rely on its functionality and does not introduce bugs in those packages.
• This code does not duplicate functionality that already exists in the framework or in ProcessMaker.
• This ticket conforms to the PRD associated with this part of ProcessMaker.